Question: Generate a question that has the following answer: Mark for the following movie plot: Late at night inside a theater, a troupe of actors and crew consisted of the director Peter, Alicia, Mark, Sybil, Betty, Corrine, Laurel, Danny, Brett, and Ferrari are rehearsing a musical about a mass murderer known as the Night Owl. When Alicia sprains her ankle, her and Betty sneak out of rehearsal for medical assistance, the closest being a mental hospital. When speaking to the psychiatrist, Betty notices an imprisoned patient named Irving Wallace, who was a former actor gone insane and committed a killing spree. Unbeknownst to any of them, Wallace killed one of the attendants with a syringe and sneaked out of the asylum to hide inside Betty's car. Upon returning, Peter fires Betty for leaving during the rehearsal. Outside, Betty returns to the car upon Wallace murdering her with a pickaxe. Moments later, Alicia finds her body and contacts the police, resulting the body removed and stationed two officers on the outside premises. Meanwhile, the director creates an idea by altering the play's script; he renames the show's antagonist to Irving Wallace instead of an ambiguous killer, and insists that everyone stay the night to begin immediate rehearsals with the new material. The group reluctantly agrees to stay with promise of additional cash, and Corrine hides the theater's exit key. Unknown to the group, Wallace has donned the theater's owl costume. Peter shoots a scene with Corrine, and Wallace appears in the costume to strange her before stabbing her to death. Without the key's whereabouts, the group begins to panic and the killer disconnects the phone lines to prevent them from contacting the officers. While the group tries to find an escape route, Ferrari is stabbed by Wallace and hangs his body upon being found by the group. While Peter and Danny leave the group inside a room and search for the killer, Laurel notices Wallace outside trying to open the door and the group barricades the door; the killer then breaks the window to grab Mark before killing him with a power drill through the door. Peter and...
Answer:
Who is killed with a power drill?