New evidence suggests that at least one convict escaped from Alcatraz and survived.  National Geographic investigates one of the most intricate prison escapes in history - three tireless inmates break from the fortress-like Alcatraz Island Federal Penitentiary and brave the frigid waters in a handmade raft. For nearly 50 years, it was assumed that these men drowned, but what if they didn't?National Geographic goes inside the U.S. marshals' investigation following the complex and tantalizing leads they've tracked to close this case.This product is manufactured on demand using DVD-R recordable media. Amazon.com's standard return policy will apply.This product is expected to play back in DVD Video "play only" devices, and may not play in other DVD devices, including recorders and PC drives.