After Rob's body parts were taken down to storage, in the basement, a cold tingle ran over the parts. Not that Rob would be able to feel it, though, given his current situation.
The guy working in the store room looked at what was on the evidence cart and said "Is this a joke?"
"What?" the guy pushing the cart said.
The store room guy picked up one of the plastic-covered body parts. "This hand is fake. It's a mannequin hand."
"It can't be."
"Look at it," he said, pushing it in the guy's face.
"But ... it was real. I swear it was."
"Yeah, right. Listen, I'm not the kind of guy you want to joke around with."
"But I swear. I thought they were real. I ... I'll go back upstairs and find out who switched them."
"Yeah, you do that."
On the way back upstairs, the evidence cart guy passed what used to be a mannequin, but was now Rob. It had been one of those medical mannequins, that showed the different parts of the body when certain parts of the chest and head were removed. Now Rob had that body. (Fortunately this one had legs, but unfortunately, it had no arms.)
He had no idea how he got from his car to this basement. Apparently the shock of turning into body parts gave him selective amnesia, and that was probably a good thing. No one wants to remember something like that.
Naked, Rob walked through the basement to figure out where he was and try to get out.