When Colonel Charles Mabbitt authorises a team from his secret intelligence unit, The Det, to mount an illegal covert operation in Paris, a ghost from the past returns to haunt him. Suspended and accused of murder, he embarks on a journey where the stakes are higher than he could have possibly imagined. Michael Prentiss has to go back into the dark world of espionage, treachery and double-cross to help Mabbitt prevent the assassination of a world leader.