The Magazine of Fantasy & Science Fiction Mystery Magazine" appeared, edited by Fred Dannay and focusing on detective fiction. The magazine was published in digest format, rather than pulp, and printed a mixture of classic stories and fresh material. Dannay attempted to avoid the sensationalist fiction appearing in the pulps, and soon made the magazine a success. In the early 1940s Anthony Boucher, a successful writer of fantasy and sf and also of mystery stories, got to know Dannay through his work on the Ellery Queen radio show. Boucher also knew J. Francis McComas, an editor who shared his interest in fantasy and sf. By 1944 McComas
Pen name but subsequent books were written by ghost writers. For instance, many of the later books in "The Saint" adventure series were not written by Leslie Charteris, the series' originator. Similarly, "Nancy Drew" mystery books are published as though they were written by Carolyn Keene, "The Hardy Boys" books are published as the work of Franklin W. Dixon, and "The Bobbsey Twins" series are credited to Laura Lee Hope, although numerous authors have been involved in each series. Erin Hunter, author of the "Warriors" novel series, is actually a collective pen name used by authors Kate Cary, Cherith Baldry, Tui T.