Corporal Punishment is the tenth episode of Season Five and also the 104th episode of the entire NCIS series.
A Marine being treated for Post-traumatic stress disorder escapes the hospital he was in and goes on the run, forcing the NCIS team to search for him. When they do eventually find the missing Marine, the team find themselves engaging in a brutal fight with the Marine that leaves DiNozzo, McGee and Ziva injured. As the team investigate, they discover that the Marine was the unknowing subject of a secret super soldier experiment until the team later discover new information that changes the entire investigation...
Dr. Adrian De La Casa walks across the grounds of Bethesda Naval Medical Center and heads for his car.
As he gets in, someone else punches the window of the driver's seat, startling De Le Casa with the person sliding into the driver's seat, forcing De La Case into the passenger seat.
Seconds later, the car drives off into the night.
Meanwhile, back at the hospital, alarms are being raised and in a room, there's scenes of destruction as a person on the speakers state that this is a red alert as various medical personnel prepare to get things contained.
It then cuts to a cell room where orderly Chris Jenkins is sitting against a wall, a cut on his head.
Back in the bullpen, Tony remarks that when they're dealing with a guy on the run, they've got to climb inside his head, think his thoughts and wonder what the guy would do or where he would go.
"Did a one-armed man murder his wife?", McGee asks.
|Leroy Jethro Gibbs||Mark Harmon||Special Agent in charge of the Major Case Response Team, NCIS.|
|Anthony DiNozzo||Michael Weatherly||Senior Special Agent, MCRT, NCIS.|
|Ziva David||Cote de Pablo||Mossad Liaison to the NCIS.|
|Abigail Sciuto||Pauley Perrette||Chief Forensic Specialist, NCIS.|
|Timothy McGee||Sean Murray||Junior Special Agent, MCRT, NCIS.|
|Jennifer Shepard||Lauren Holly||Director of NCIS.|
|Donald Mallard||David McCallum||Chief Medical Examiner, NCIS.|
|Corporal Damon Werth, USMC||Paul Telfer (actor)||Second Iraq War veteran with suspected PTSD & steroids.|
|Navy Capt. Dr. Adrian De La Casa||José Zúñiga||Navy Captain in charge of treating Damon Werth.|
|Karen Sutherland||Amy Carlson||BioTech employee.|
|Private First Class Nathan Stone, USMC||John Siciliano||Second Iraq War veteran with Damon Werth.|
|Chris Jenkins||Marcuis Harris||A nurse at the local hospital where Werth was being treated.|
|Ray Vincent||Patrick Fabian||PR Man for a Senator.|
|Amputee Veteran||Anthony Jennings||Uncredited role.|