Gabby St. Claire Thomas has been given the opportunity of a lifetime: heading up a privately funded Cold Case Squad and handpicking the team members. Persnickety Evie Manson and nerdy Sherman Gilbert join forces with Gabby to bring justice and solace to families who still want answers. On their first case, the Squad discovers that the murders of Ron and Margie Simmons are more than cold—they’re frozen solid. The couple’s anniversary celebration ended as a double homicide, and ten years later their daughter still longs for answers. But who would kill the loving couple? What kind of secrets hid beneath their cheery, All-American exteriors? With every new lead, someone tries to sabotage their investigation . . . but the team might just end up being their own worst enemies. As a deadline presses in, can Gabby and her Squad bring the heat? Or will this cold-case killer make a clean getaway?

Gabby St. Claire Thomas and her Cold Case Squad reunite to solve a missing person's case. A friend of Gabby's husband needs help. His wife, Brooke, went to work one day and never returned home. No one has seen or heard from the woman in four months, and every lead has dried up. Gabby and her team begin to unravel clues about Brooke's life . . . and not all is as it seems. With each new layer that's revealed, they realize the case may be bigger than they ever imagined. Did Brooke walk away from her life . . . or did she become ensnared in something deadly? Gabby fears this investigation won't be the clean sweep she hoped for. No, the dirt she's turning up might be more of a toxic stain. But as the stakes become clear, she realizes that failure isn't an option.

Gabby and the Cold Case Squad tackle their most personal case yet. Evie Manson’s foster mom vanished six weeks ago on a trip to Pennsylvania. The mystery surrounding her disappearance haunts Evie. Was it a blind date gone bad? Is she injured somewhere all alone? Why hasn’t anyone heard from her since? With not a clue in sight, Gabby and the Cold Case Squad travel to Shady Valley to investigate. When no one will answer their questions and hostility abounds around every corner, the crew determines something is definitely shady in the valley. News of a dead body found in the local park intensifies the search for Evie’s missing mother. Just what is the town hiding? Is Evie’s foster mom even still alive? Gabby and her team need to catch a break before time runs out. But will obstacles at every turn stop them?