But, borrowing an idea from the great 1951 film Strangers on a Train, Rathbone trades crimes with Wu Yip (Donnie Yen, from Iron Monkey), who will perform the nine murders in exchange for the seal.
He agreed to swap slayings (a la Hitchcock's "Strangers On a Train") with an ambitiously evil Chinese nobleman ("Iron Monkey's" terrific, deadpan scowling Donnie Yen) who is now obligated to help him become king by killing everyone in line for the throne before him.