TRAUMA -- "Masquerade" Episode 105 -- Pictured: Derek Luke as Cameron Boone -- NBC Photo: Trae Patton.

Halloween is just days away and TV shows are already in full swing airing their holiday episodes.

Even a serious drama like Trauma has gotten in on the action by sending characters Boone (Derek Luke) and Tyler (Kevin Rankin) into the wackiest part of San Francisco to treat patients.

Halloween is serious business in San Francisco where Trauma is shot, but you won’t find Derek Luke in costume out on the town.  It’s not that he’s anti-Halloween, it’s just that his mother set the ground rules for the costumes from the time he was a kid.

Click onto videos for Derek Luke’s explanation as to why Halloween wasn’t a big holiday in his house.

Trauma airs Monday nights, 9:00 p.m. ET/PT on NBC.