The killing of Rasputin has been a closed case for almost a century and is one of the most notorious murder stories in modern history.
Now Timewatch re-opens the case and uncovers extraordinary new evidence.
It leads to a startling new theory that the assassination was carried out by the British Secret Service.
Former Metropolitan Police murder detective, Richard Cullen, pieces together the new information and re-examines existing evidence.
The investigation takes in family testimony, forensic experts, newly discovered documents and previously unseen photographs that point to the real murderer.
Broadcaster: BBC Timewatch
TX Date: October 2004
Total Episodes: 1
Duration: 50 mins
Executive Producer(s): Bill Locke
Presenter(s): Michael Praed
Useful Links: BBC Two