In 1971, infamous fugitive D.B. Cooper hijacked a plane in Seattle and demanded $200,000 in ransom and four parachutes.

With the cash in hand, he later jumped out of the plane over the U.S. Pacific Northwest and was never heard from again.

Theories about Cooper's true identity and his ultimate fate have run rampant since. Now a Washington lawyer says the notorious hijacker may have stashed his cash in a Vancouver bank before he returned to his life as a college instructor in Utah.

And Galen Cook says that money may still locked in a bank safety deposit box in the British Columbia city.

Despite hundreds of leads, no conclusive evidence of the man's true identity has ever been found. Now Cook, a lawyer in Spokane, Wash., says evidence he has collected suggests Cooper was actually William Gossett, a college instructor from Ogden, Utah, who died in 2003 at age 73.