The program makers re-opened the investigation into his death and found conclusive evidence to suggest that Rasputin was murdered in St Petersburg in 1916 in a plot hatched by rogue members of the British Secret Service – with a fatal shot fired at close range by Secret Agent Oswald Rayner. The documentary is based on extraordinary new evidence uncovered by intelligence historian, and program consultant, Andrew Cook.The program makers re-opened the investigation into his death and found conclusive evidence to suggest that Rasputin was murdered in St Petersburg in 1916 in a plot hatched by rogue members of the British Secret Service – with a fatal shot fired at close range by Secret Agent Oswald Rayner. The documentary is based on extraordinary new evidence uncovered by intelligence historian, and program consultant, Andrew Cook.