A gangster running a protection racket gets information that he's about to be prosecuted on income-tax-evasion charges. He hires a man with a photographic memory to memorize his books, then destroys them all so the police won't have any evidence
What's New, Scooby-Doo? Vol. 7: Ready to Scare
From Russia with Love
Scooby-Doo's Spookiest Tales
With a Right to Kill