High Quality Content by WIKIPEDIA articles! "The Tip-Off" is the third episode of series seven of the British espionage television series Spooks, and the 58th episode overall. It was originally broadcast on digital channel BBC Three on 28 October 2008, and repeated on frontline channel BBC One on 3 November. The episode was written by Russell Lewis; with additional writing by Ben Richards; and directed by Peter Hoar. In the episode, Ben Kaplan (Alex Lanipekun) goes undercover to infiltrate an Al-Qaeda cell in London during a dry run before an expected attack. However, it later becomes apparent the terrorists are going to attack during the dry run.