This solid police procedural, with just a shot of noir, continues the sleuthing of single father George Hastings, the St. Louis police detective introduced in The Betrayers. This time around, the case gets off to a rip-roaring start as bored heiress Cordelia Penmark is kidnapped and her escort fatally shot as they leave an upscale party. The FBI quickly gets involved, as do the Illinois State Police and the victim's wealthy father quickly pays her ransom--but Cordelia doesn't escape danger so easily.
Chapter-by-chapter, the story skips back and forth between the dedicated cops, Cordelia's ordeal, and her double-dealing abductors. As Hastings looks closer at the Penmark family, he discovers deep dysfunction, with a nipped-and-tucked stepmother, and a sister with some unusual confidants. A possible link to the crime is a long-forgotten liberal cult whose members may have resurfaced. Still another theory involves the upwardly mobile lawyer who was Cordelia's murdered date on the night of the crime. As motives become more complex and the violence escalates, Cordelia's survival becomes increasingly precarious.
Treacherous villains, dark motives, a strong-minded young woman, and a host of red herrings come together in Goodbye Sister Disco. It wraps with a conclusion that gives a knowing wink to Hitchcock fans.