The McBains were murdered by escaped convicts in their sleep together. This event was witnessed by Beagle who proceeded to spy on the convicts instead of anything else. Their decapitated corpses were left behind at the sheriff's office to rot. The townsfolk of Primm give them both a proper burial once peace is restored.
↑The Courier: "How'd you end up being a hostage?" Beagle: "I must say it's been the low point of my career in law enforcement... The Powder Gangers stole into town at night and murdered my sister and her husband, the sheriff, in bed, while I was sleeping in the office. I watched them for a bit, waiting for the right moment to pounce and arrest the lot of them. Taking careful notes as I watched. To my dismay, they found me while I waited in the shadows and brought me here." (PrimmDeputy.txt)