John Musgrave

"Ethan. Three days ago, Agent Lindsey Farris was captured while on a surveillance operation. This is the man she was tracking. His name is Owen Davian. Details are eyes-only, but I can tell you that Davian's a black-market trafficker. Extremely dangerous and a priority for us. At 1400 hours today, a recon satellite ID'd a caravan of vehicles with plates matched those known to have been used by Davian's operatives. They stopped at a derelict factory outside Berlin. It appears they have a hostage. We believe it's Agent Farris. Normally we would disavow, but Lindsey may be the key to getting us closer to Davian, and that's a risk we need to take. Your mission, should you choose to accept it, is to find Lindsey and bring her home. I've already assembled a team. I have them standing by, awaiting your word. This message, let's call it my excellent engagement gift to you, will self-destruct in five seconds. Good luck, Ethan, and thanks again."

- John speaking to Ethan in a modified mission briefing camera

John Musgrave is the Operations Manager for the Impossible Mission Force and the secondary antagonist of the 2006 film Mission: Impossible III.

He was played by Billy Crudup.

As IMF's Operations Manager
During the opening scene of the film, Musgrave sends IMF agent Ethan Hunt to rescue his kidnapped protege, Lindsey Farris, bringing him out of his semi-retirement of the agency. In the video briefing from a modified camera, Musgrave tells Ethan that three of IMF agents Luther Stickell, Declan Gormley and Zhen Lei are his teammates in this mission.

When Hunt's wife, Julia Meade, is kidnapped by Owen Davian and Ethan himself is arrested by IMF, Musgrave gives Hunt enough time to break free.

Revealed himself as a traitor
In Shanghai, China, Ethan has to deliver Rabbit's Foot to Davian in exchange for Julia's release, only Ethan is subdued and loses the Rabbit's Foot in the process which prompts Davian to shoot "Julia".

Musgrave arrives and explains that the woman killed was not Julia, but Davian’s translator, executed for failing to protect him in Vatican City. The ruse was to confirm the authenticity of the Rabbit's Foot. Julia is alive and held as a hostage. Musgrave reveals himself as the inside man & right-hand man of Davian. He arranged for his boss to acquire the Rabbit's Foot and sell it to various terrorist groups, so that the IMF would have reasons to launch a preemptive strike and he also tells Ethan that it is pointless to kill Davian, because there are ten more men like him who would quickly take his place. Then, he allows Ethan to talk to Julia via his cell phone and when he buckles, Ethan easily knocks him out and steals his phone to call his colleague and technician, Benjamin "Benji" Dunn. The latter helps him locate Julia and eventually kills Davian by making him collided by a speeding truck. While Ethan is unconscious because of a micro-explosive charge that has previously been implanted in his head, Julia kills a henchman and later Musgrave who was carrying the case containing the Rabbit's Foot.