Easy's Last Stand — Nancy A. Collins

It's the 1980s and a serial killer known as Butcher John targets the building that houses Easy's Hot Talk, a phone sex business that advertises in the back of magazines like Hot Milk and Big Bad Mamas. Butcher John is on a mission to rid the world of immoral sluts who tempt men into sin--and Easy is next on his list. But Butcher John soon learns that taking out the Hot Talkers is anything but easy.