E.J. Copperman is the nom de plume for Jeff Cohen, writer of intentionally funny murder mysteries. As E.J., he is the author of the Haunted Guest house series, the Agent to the Paws series and the Jersey Girl Legal mysteries, as well as the brand-new Fran and Ken Stein mysteries. As Jeff, he is the author of the Double Feature and Aaron Tucker series; and he collaborates with himself on the Samuel Hoenig Asperger's mysteries.

A New Jersey native, E.J. worked as a newspaper reporter, teacher, magazine editor and screenwriter, before his first book was published to critical acclaim in 2002. In his spare time, Jeff is an extremely amateur guitar player, a fan of Major League Baseball, a couch potato and a crossword addict.