John Walker's aviation fraud is one of the deadliest true crime cases we've  covered. He built "Frankenstein helicopters" from crashed remains, bribed an FAA inspector, and ran 48 shell companies from Guam—while pilots kept dying.  

Built from 3,070 pages of federal court documents, this episode reveals how Walker's scheme killed 10 pilots, including one who died during his own trial. He's now serving 405 months in federal prison.                               

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