The Act of police intentionally stopping the elevator in a detention center, between floors and proceeding to violently beat the perp for several minutes before resuming and taking the perp to the jail block and citing that the person slipped in the elevator. (Happens if the perp seriously pisses off the cops ) the operation being common in the 80's and 90's when most elevators were not equipped with CCTV
Damn man they just brought Jason back from Interrogation, By the looks of his face they gave him the Elevator treatment on the way back. Must've pissed them off during the session"