Take a tough but vulnerable Chicago cop and add a hyperactive cat, a health-challenged mother, a jealous boyfriend, a difficult ex-husband and a colleague in the grips of a midlife crisis. Mix these ingredients with a psychopath who scatters severed body parts around town, and spice it all up with equal parts a dash of humor and a dash of suspense, and you have "Good Cop, Bad Cop" - the second volume in the funny yet terrifying world of Lieutenant Jacqueline "Jack" Daniels. Join Jack on her adventures as she struggles with the challenges of a chaotic and off-track personal life while tracking down and putting behind bars one of the most dangerous serial killers in recent memory - a killer for whom it.