Holmes finds himself with a severed head and no memory of how he got it on Elementary. "Bits and Pieces" is the fifth episode of the show's sixth season.
Dr. Hawes: We've talked about this. You don't get to go on the ride until it's your turn. Sherlock: When it's my turn, I won't really get the full experience. Dr. Hawes: You want the full experience? Stay there. I'll get my scalpel.