Boris Karloff was the host and occasional star, with music by organist George Henninger.
Produced and directed by Charles Warburton, the series adapted short stories of mystery and suspense.
[2] Beginning with the October 27 broadcast, the title of the series was changed to Mystery Playhouse Starring Boris Karloff.
[1]: 634 [5] Radio historian John Dunning described Starring Boris Karloff as a horror anthology series that adapted well-known short stories by Arch Oboler, Cornell Woolrich and others.
[1]: 634 Sources for episode information include Jerry Haendiges Vintage Radio Logs.