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The first episode of a thrilling espionage series. When a meeting with an informant turns fatal, MI5 agent John Hughes believes that there is a deadly conspiracy behind it.

Thrilling espionage series. John is convinced that he has exposed an assassination plot - and about to discover that his wife is getting attention from a colleague.

As John tries to track down an elusive Iranian general, he becomes increasingly convinced that he is being deceived at work and at home.

John must escape captivity to intercept the attack, but those who want it to proceed will stop at nothing.