When Bob Kane and Bill Finger first developed Kane's "Bat-Man," they patterned the character after pulp mystery men such as The Shadow. Finger then used "Partners of Peril"—a Shadow pulp written by Theodore Tinsley—as the basis for Batman's debut story, "The Case of the Chemical Syndicate." Finger later publicly acknowledged that "my first Batman script was a takeoff on a Shadow story" and that "Batman was originally written in the style of the pulps." This influence was further evident with Batman showing little remorse over killing or maiming criminals and not above using firearms. Decades later, noted comic book writer Dennis O'Neil would have Batman and The Shadow meet in "Batman" #253 (November 1973) and "Batman" #259 (December 1974) to solve crimes. In the former, Batman acknowledged that The Shadow was his biggest influence and in the latter, The Shadow reveals to Batman that he knows his true identity of Bruce Wayne but assures him that his secret is safe with him.