Lock your doors and turn on all the lights. A murderer is on the loose in central Pennsylvania's Susquehanna Valley. Or was it murder? Fay Cunningham, newspaper publisher, is determined to find out.

Having taken a leave-of-absence from her newspaper, The Susquehanna Valley Daily, Fay is determined to lose weight, quit smoking, and completely turn her life around. As part of her new regime, she took on the task of delivering newspapers on foot. All is well - until she attempts to deliver a newspaper to her godfather, Joe Wise, and is met at the door by a mysterious young blonde.

Who is the young woman barring the doorway, and where is Joe? Will Fay's friend and mentor, Mitch Malone, help her uncover the truth? Surely, Joe didn't fire Ethel, his elderly housekeeper, in favor of some young slip of a gal? The answers to all these questions and others that will arise can be found in the pages of "A Dangerous Woman."