Monogram continued to experiment with film series; some hit and some missed. Definite box office hits were Charlie Chan (which Monogram picked up in 1944 after the series had been dropped by Twentieth Century Fox), The Cisco Kid, and Joe Palooka, all proven movie properties abandoned by other studios and revived by Monogram. Less successful were the comic-strip exploits of Snuffy Smith, the mysterious adventures of The Shadow, and Sam Katzman's comedy series co-starring Billy Gilbert, Shemp Howard, and Maxie Rosenbloom.