Re: I Have An Episode/Character Question Thread *No Spoilers Im pretty sure it was when the Doc was trying to get part of a bug suit over his leg, when he and Grissom were doing an autopsy on a corpse that was covered in red ants. I think the episode was Snuff. ETA: [INT. CSI - OUTSIDE FORENSIC AUTOPSY -- NIGHT] (DOC ROBBINS struggles to put on his protective suit around his leg. Next to him, GRISSOM also puts on his suit.) ROBBINS: Come on, you bitch! I'm allergic to red ants, you know. (GRISSOM puts his head gear on and works to put his gloves on. ROBBINS does the same.) I don't they've ever addressed why/how the Doc lost his legs but I believe Robert Hall lost them in a car accident.