Mr. X sends Crusher Kane to head up a local mob and commit a crime at a pawn shop, but he also lets the Crimson Avenger know where and when that crime is to be committed.; After the Star-Spangled Kid and Stripesy are challenged to a duel of wits by Mr. X, a Mr. Doremy offers to allow his vast, but well-protected, estate as the venue for the confrontation.; The Western Waddy smells a rat (or inside job) when a rodeo box office is robbed and the man responsible for guarding it falls down on the job.; When Justin receives the letter from Blackie Kraul warning him of Mr. X, the Shining Knight sallies forth to battle the infamous Gorilla Gang.; When Inco discovers a green feather on the person of Mr. Ponsonby, he figures him to actually be the Green Arrow, which nearly leads to Mr. X being captured.; A group of criminals meet at a luxurious hotel and discuss the fact that each had been once captured by a member of the Law's Legionaires, then a Mr. X steps forward and bets the crooks $10,000 each that he can overcome each of the "over-rated" heroes himself.; Mr. X is taking it on the lam, with the Law's Legionaires in hot pursuit, when the master criminal comes face to face with the very criminals he lost the wagers to.