Horror Express 1972

Set in 1906 An English anthropologist (Christopher Lee) has discovered a frozen monster in the frozen wastes of Manchuria which he believes may be the Missing Link. He brings the creature back to Europe aboard a trans-Siberian express, but during the trip the monster thaws out and starts to butcher the passengers one by one.
This Movie teams Lee with Cushing, it also includes Telly Savalas.