MINOR SUPER-VILLAIN 816: THE MASTERMIND

(The Spirit, "the Mastermind Strikes", 6 October, 1940)

The Mastermind is really Joel Kenner, a mayoral candidate who tries to get his Tough on Crime campaign a boost by murdering both of his campaign managers and blaming the deaths on the Spirit. This ends poorly for Kenner, who ends up stabbing himself with his own knife like a complete dolt.