Homicide Detective Kaylin Gallagher and her partner, Delaney Lord, are called to the parking garage of a skyscraper in downtown Fort Lauderdale on a muggy Sunday morning in July. The body of a young woman had been found in the Dumpster on the first level. With little evidence, they tour the premises of the private and very luxurious BDSM club in the penthouse called The Black Iris Club, looking for a crime scene. The club's owner, handsome bachelor Jack Dalton Brown, has an iron-clad alibi, but Del Lord is still suspicious. Brown has his pick of women, but beautiful, slightly quirky Kaylin catches his eye. When the investigation goes nowhere, Jack Brown offers to let the detectives run an undercover operation in his club. With Kaylin as his sub they attempt to draw out the murderer while three more bodies have turned up. Jack and Kaylin's relationship blooms but then hits some rocky ground. Can the Dom and the Detective get the bad guy and work out their problems?