I hope the Legion burns your wretched body at the stake when they conquer this place. Nothing I could tell you would do anything to stop that.Silus

Silus Treatment[1] (or McCarran: POW in the G.E.C.K.) is an unmarked quest in Fallout: New Vegas.

Quick walkthroughEdit

Unmarked Quest: Silus Treatment
Travel to Camp McCarran and enter the terminal building.
Go to the west end of the second floor. Find Carrie Boyd in a room to the north or alternatively, speak with Colonel James Hsu in his office to the east.
Speak to Carrie Boyd and agree to help her interrogate the prisoner.
Interrogate the prisoner.
Free the prisoner.
Reward: NCR fame
175-300 caps
325 XP

Detailed walkthroughEdit

Silus is held captive in Camp McCarran, and the NCR is attempting to interrogate him. He will not give information to the NCR, and interrogator Carrie Boyd is looking for help. She informs the player that the NCR does not allow torture of prisoners. The player can suggest a truth serum, beating the prisoner, or calling him names.

If the player has a reputation of Accepted or higher with the NCR, Lieutenant Boyd will allow the player to go in and speak with the centurion. The player will go in unarmed, unless the player's Sneak skill is high enough to bring in holdout weapons.

The Courier can either break Silus or help Silus escape.

Break SilusEdit

The Courier can speak with Silus or attack him outright.

  • Should the player speak with Silus:
    • The direct option is to attack Silus. After a brief fight, Lt. Boyd will come in again and ask Silus if he wants more. When the centurion refuses, the player will briefly speak to him again, and begin attacking once more. After a second round of fighting, Silus will talk.
    • Passing a series of Speech checks with high Speech (50 is enough, though the required Speech skill is not shown) will cause him to spill information.
      • This is worth 50 extra XP
    • With Intelligence 8 or higher, the player can persuade him into thinking that you are working with the Legion and are here to assassinate him; this will result in him panicking, causing him to accidentally tell you all of his plans in an attempt to convince you into sparing him, as well as hinting to you about Caesar's illness, he will also hint about the spy Caesar planted in McCarran. Here, some knowledge of Latin will help you understand the dialogue choices:
      • Timeo Danaos et dona ferentes means "I fear the Greeks, even when they offer gifts." This is a line from the Roman poet Virgil, recounting the doubts of Laocoön, one of the Trojans, about accepting the gift of the Trojan Horse.
      • Corruptio optimi pessima means "Corruption of the best is the worst possibility." It is originally from Pope Gregory I (Gregory the Great).
      • Legum servi sumus means "We are all slaves to the law." The phrase is originally from the Roman orator and statesman Cicero, and in full reads Legum servi sumus ut liberi esse possimus -- "We are the slaves of the law, in order that we might be free."
      • At the end of the conversation the player can attack him, asking if he has any last words, to which he replies "Cedo Nulli" which means "I yield to no one," though he does not become hostile.

You can also kill Silus to gain history points with Boone. Just take Boone with you and give him a weapon like a knife. Enter the room, go through the Speech checks, exit the room and talk to Boyd to get your reward. Take the weapon from Boone and kill Silus. Talk to Boone to advance your history with him and give him back the weapon and leave.

Killing Silus during the interrogation results in Boyd condemning your action by complaining that she lost her best shot at getting a promotion since he didn't reveal anything about the Legion and you ended his suffering, and finishing this diatribe by calling you an "asshole." An NCR Infamy gain is received.

After the information is gained from Silus, you can no longer interact with him, and Lieutenant Boyd will pay you for your troubles.

Help Silus escapeEdit

If the player has already been invited to Caesar's camp at The Fort or has a positive reputation with the Legion, they have the option to tell Silus this. The player can choose to stage a fight with him and retrieve his silenced .22 pistol from the locker in the next room. When the player returns for the second round of interrogation, Boyd will confiscate all weapons except the pistol. After giving Silus the weapon, he will fake being unconscious. Boyd will come back in and say it looks like he is "all tuckered out," and she and the player will leave. On the way out, she will tell the corporal to go clean Silus up and he will go in and tell Silus to get up. Silus will kill the Corporal and dress in his clothes. He will then sneak out undetected by the NCR. The Courier will not lose any reputation with the NCR as a result.


  • After Silus is dressed as an NCR corporal he will not speak to the Courier while he leaves.
  • If Boone is with the Courier, he detects and becomes hostile to Silus once Boyd has left the room and called for the Corporal. Silus also detects Boone and walks around with the pistol drawn. Silus ultimately leaves the room (and will typically be shot dead by Boone) without having shot the Corporal or disguised himself. Boone does not talk about the incident afterwards.
  • The Courier is unable to explain to Silus that they are from the Legion if they are wearing NCR faction armor.


  • NCR fame
  • 175 (attacking Silus) or 300 caps (persuading Silus)
  • 325 XP


  • Although Silus will become hostile to the Courier, he will never actually fight back against their assaults. He will only block and sidestep when they hit him. This means the Courier needs not worry about their Hit Points or Unarmed skill.
  • Caesar approves of the Courier releasing Silus before he could talk about Legion movements, though is less pleased by Silus' capture by NCR troops and plans to punish him. Caesar also approves of the Courier killing Silus.
  • It is not necessary to kill Silus during the interrogation to gain "fame" with Boone. So long as the Courier has Boone as a follower, they can kill Silus before, during, or after the interrogation.
  • Regardless whether the player character chooses to kill Silus during or after the interrogation, all further conversation with Boyd will begin with "Haven't you done enough?" However, this doesn't have an effect on any other dialogue chains - including quest related dialogue.
  • Silus disappears from Camp McCarran once he reaches the terminal doors.
  • If the player approaches Lt. Boyd dressed as a member of the NCR, she will address them as a NCR soldier. The dialogue for this side quest changes and she will disregard the player's offer to help. (Easily fixed by merely taking off the armor and talking to her again).
  • After everything is done, Silus and Boyd will still continue their banter while she is walking away. They will talk to each other as if they are still in the same room despite Boyd being halfway across the building.
  • On PC, if, for any reason, the Courier is unable to initiate the quest through dialogue with Boyd (or simply wishes to bypass the reputation check), the door can be unlocked via console commands, which will force the quest to proceed as normal and can be finished for either faction.

Behind the scenesEdit

The name of this quest is a play on the term "silent treatment," which means to deliberately ignore someone for a period of time, usually because of something they have done.


  • PCIcon pc Playstation 3Icon ps3 Xbox 360Icon xbox360 It is possible to earn infinite XP with a glitch while talking to Silus. Use the first speech check option (50 XP), then use intelligence one. After Silus' answer, the speech check will still be available, as well as the XP. [verified]
  • Xbox 360Icon xbox360 If the player leaves the room after the first time Silus is talked to, the room will become inaccessible and further interaction with Lt. Boyd only result in her saying "Let's talk after we finish this up," ending the conversation abruptly. However, it is possible to return to the area in a few game hours. [verified]
  • Xbox 360Icon xbox360 The door has many opportunities to bug: if the game is saved after Boyd enters the room to introduce the Courier, the room will remain locked prohibiting the interrogation after she leaves. Also, if Silus is murdered in order to earn points with Boone towards triggering his character quest I Forgot to Remember to Forget, Boyd may become stuck in the room afterwards, preventing the player from talking to her again and completing I Put a Spell on You. [verified]
  • PCIcon pc Playstation 3Icon ps3 Xbox 360Icon xbox360 Reloading the auto save that occurs when first entering the room may cause all of the player's weapons to spawn back in the inventory. [verified]
  • PCIcon pc Around the third going into the interrogation room, a random NCR trooper can spawn inside as well, kiling Silus, preventing the full reward and resulting in infamy with the NCR. [verified]
  • Playstation 3Icon ps3 Sometimes Boyd's face may not load and will only have her eyes and mouth showing. It can be fixed by exiting the building and re-entering. [verified]
  • PCIcon pc Do the speech option of [Intelligence] and don't leave the room. If you engage in conversation with Silius while Boyd is talking to him again, Boyd may disappear, although the conversation between her and Silus continues. If you tell Silus you are not from Caesar's Legion while this happens, after Boyd finishes the speech you can talk to Silus again and apparently he just forgot what you said and thinks again that you are a legionary. [verified]
  • PCIcon pc Xbox 360Icon xbox360 If you initiate this quest and have Boyd enter and talk to Silus but then you don't go in after she exits and you leave and proceed to do various other quests and gain rep with the NCR, when you come back you may be unable to continue the quest and Boyd will act as if you "have to do a lot more NCR ass-kissing" before she'll let you help with Silus. If you talk to Hsu, he will still recommend that you see if Boyd needs help. [verified]
  • Xbox 360Icon xbox360 After entering the interrogation room for a second time and beating Silus to get the information a glitch can occur when exiting the room to talk to Boyd. She will disappear and not be anywhere within the building. [verified]
    • Note: After experiencing this, it may be possible to find her through the I Put a Spell on You quest. She may appear in the hall to the right of where you find Col. Hsu, by the Nuka Cola machine. This may require I Put a Spell on You not being started until after Boyd disappears.
  • PCIcon pc After helping Silus escape, sometimes Lt. Boyd got stuck in the same dialogue, making future interactions with her impossible. On the PC, this can be fixed in console with the command set "00E7913".bSilusUnconscious to 0. [verified]
  • Playstation 3Icon ps3 Loading the Autosave when you enter the interrogation room may result in you being permanently locked inside with Silus. [verified]
    • Note: This can be worked around by immediately exiting the room, before talking to Silus. The player then can reenter the room and proceed as normal.
  • Playstation 3Icon ps3 If you do all of the speech checks in Silus' dialogue then kill him before Boyd tells you to stop, Boyd returns to the room and lock it and will not leave but appear to be talking to the empty chair. [verified]
  • PCIcon pc Playstation 3Icon ps3 Xbox 360Icon xbox360 If you have ED-E or Boone as a companion, he can follow you into the interrogation room. Once you start hitting Silus, turning him hostile for brief periods, ED-E will also attack him. [verified]
  • Xbox 360Icon xbox360 After entering the interrogation room for the first time, re-load the auto save of when you entered the room. You should now have all your weapons not just holdouts. [verified]
  • Xbox 360Icon xbox360 Silus must reach the terminal doors without being made hostile through a failed pickpocket attempt (even if he doesn't detect the player) in order for Caesar to acknowledge his release. [verified]
  • PCIcon pc Xbox 360Icon xbox360 When interogating Silus, any characters inside the terminal, most commonly the Corporal or your followers, may believe that Silus is an actual threat and come to your aid, resulting in Silus' death. [verified]
  • Playstation 3Icon ps3 Sometimes when Boyd enters the room where Silus is located, she may not exit the room making the quest impossible to complete, this may be fixed by continuing other quests. [verified]
  • PCIcon pc Xbox 360Icon xbox360 There's a chance that after beating Silus the first time and going back in that he won't respond to anything; trying to talk to him fails, and he merely sits in the chair. At this point, killing him will yield no angry dialogue with Boyd, nor any NCR infamy. Also, if the room is left, it cannot be entered again, leaving the quest broken. Alternatively, this may happen when reloading a save at this point - Silus will get up, and instead of turning hostile he will sit back down again. [verified]


Main quests
Act 1Ain't That a Kick in the Head · Back in the Saddle · By a Campfire on the Trail · They Went That-a-Way · Ring-a-Ding-Ding!
Act 2Wild Card (Wild Card: Ace in the Hole, Change in Management, You and What Army?, Side Bets, Finishing Touches) · The House Always Wins (I, II, III, IV, V, VI, VII, VIII) · Render Unto Caesar · Et Tumor, Brute? · Things That Go Boom · Kings' Gambit · For the Republic, Part 2 · You'll Know It When It Happens/Arizona Killer
Act 3No Gods, No Masters · All or Nothing · Veni, Vidi, Vici · Eureka!
Side quests
New California RepublicAnywhere I Wander · Back in Your Own Backyard · Bitter Springs Infirmary Blues · Boulder City Showdown · Can You Find it in Your Heart? · Climb Ev'ry Mountain · Don't Tread on the Bear! · Emergency Radio · Eye for an Eye · Flags of Our Foul-Ups · Hard Luck Blues · I Don't Hurt Anymore · I Put a Spell on You · Keep Your Eyes on the Prize · Medical Mystery · No, Not Much · Pressing Matters · Restoring Hope · Return to Sender · That Lucky Old Sun · The White Wash · There Stands the Grass · Three-Card Bounty · We Will All Go Together · You Can Depend on Me
Caesar's LegionBeware the Wrath of Caesar! · Caesar's Favor · Caesar's Foe · Caesar's Hire · Cold, Cold Heart · I Hear You Knocking · The Finger of Suspicion · We Are Legion
The StripBeyond the Beef · Bye Bye Love · Classic Inspiration · How Little We Know · Pheeble Will · Talent Pool · The House Has Gone Bust! · The Moon Comes Over the Tower
Freeside & Outer VegasBirds of a Feather · Bleed Me Dry · Debt Collector · G.I. Blues · High Times · Someone to Watch Over Me · The Coyotes · Wang Dang Atomic Tango
BoomersAnt Misbehavin' · Sunshine Boogie · Volare! · Young Hearts
Great KhansAba Daba Honeymoon · Cry Me a River · Don't Make a Beggar of Me · Oh My Papa
Powder GangBooted · I Fought the Law · Run Goodsprings Run · Why Can't We Be Friends?
Brotherhood of SteelEyesight to the Blind · Still in the Dark · Tend to Your Business
OtherCome Fly With Me · Crazy, Crazy, Crazy · Ghost Town Gunfight · Guess Who I Saw Today · Left My Heart · My Kind of Town · The Legend of the Star and A Valuable Lesson · Unfriendly Persuasion · Wheel of Fortune
Companion questsED-E My Love · For Auld Lang Syne · Heartache by the Number · I Could Make You Care · I Forgot to Remember to Forget · Nothin' But a Hound Dog · One for My Baby
Unmarked questsA Bit of Slap and Tickle · A Final Plan for Esteban · Access Powers · All Fired Up! · An Ear to the Ground · Andy and Charlie · Arizona Scavenger · Barton the Fink · Bear Necessities · Big Winner (Atomic Wrangler, The Gomorrah, The Tops, Ultra-Luxe, Vikki & Vance) · Bounty Killer (I, II) · Brotherhood Bond (I, II) · Caching in at the Cove · Cajoling a Cudgel · Claws Mended · Claws Out · Dealing with Contreras · Defacing the Humble Stone · Democracy Inaction · Don't Poke at the Bear! · Eddie's Emissary · Exhumin' Nature · Fight Night · Flogging a Dead Corpse · Friend of the Followers · Gland for Some Home Cooking · Harder, Better, Faster, Stronger · Hat's Entertainment · Help for Halford · Hidden Valley computer virus · Highway to the Danger Zone (I, II) · Honorary Rocketeer · I Love Bananas · Iron and Stealing · Keith's Caravan Charade · Laurifer Gladiator · Lenk's Bad Debts · Lily and Leo · Long-Term Care · Malleable Mini Boomer Minds · Maud's Muggers · Meeting an Equal · Missing a Few Missiles · Most Wanted · Not Worth a Hill of Corn and Beans · Old School Ghoul · A Pair of Dead Desperados (I, II) · Papers, Please · Pistol Packing · Playing on the Old Joana · Poor Meat Never Makes Good Soup · Powder to the People · Power to the People · Razzle Dazzle! · Reach for the Sky, Mister! · Rest and Resupply · Ringo's Caravan Rules · Rotface's Loose Lips · Saving (or Savaging) Sergeant Teddy · The Screams of Brahmin · Silus Treatment · Short-Term Treatment · Smooth-Talking Criminal · The Star Showdown · Strategic Nuclear Moose · Straus Calls · Strip Search · Suits You, Sarah · Tags of Our Fallen · A Team of Moronic Mercenaries · Thought for the Day · Tourist Traipse · Trudy's Radio Repair · A Trusted Aide · Useless Baubles or Fancy Trinkets? · We Must Stop Beating Like This · We Must Stop Meeting Like This · Wind-Brahmin Wrangler · You Gotta Break Out a Few Eggs · You Make Me Feel Like a Woman
Add-on quests
Dead MoneySierra Madre Grand Opening! · Find Collars (8: "Dog", 12: Christine, 14: Dean Domino) · Fires in the Sky · Strike Up the Band · Mixed Signals · Trigger the Gala Event · Put the Beast Down · Last Luxuries · Curtain Call at the Tampico · Heist of the Centuries · Big Winner, Sierra Madre
Honest HeartsA Family Affair · Arrival at Zion · Bighorners of the Eastern Virgin · Chaos in Zion · Civilized Man's Burden · Crush the White Legs · Deliverer of Sorrows  · Departing Paradise · Flight from Zion · Gathering Storms · Gone Fishin' · Happy Trails Expedition · Prisoners of War · Retake the Bridge · River Monsters · Rite of Passage · Roadside Attraction · Sanctity of the Dead · The Advance Scouts  · The Treacherous Road · The Grand Staircase · Tourist Trap
Old World BluesAll My Friends Have Off Switches · A Brain's Best Friend · Coming Out of Her Shell · Field Research · He Came... And Went · Influencing People · Midnight Science Fiction Feature! · Old World Blues · On the Same Wavelength · Picking Your Brains · Project X-13 · Sonic Emitter Upgrade · Welcome to the Big Empty · What's in a Name? · When Visitors Attack! · X-2: Strange Transmissions! · X-8 Data Retrieval Test · X-8: High School Horror! · X-13: Attack of the Infiltrator!
Lonesome RoadThe Reunion · The Silo · The Job · The Launch · The Tunnelers · The Divide · The Courier · The End · The Apocalypse
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