When an accident claims the life of an oil-rig worker off the North Carolina coast, Coast Guard investigators Rissi Dawson and Mason Rogers are sent to take the case. But mounting evidence shows the death may not have been an accident at all, and they find themselves racing to discover the killer’s identity before he eliminates the threat they pose.

Growing up, goody-two-shoes Kirra Jacobs and troublemaker Reef McKenna were always at odds. Now, working together as search-and-rescue for Alaska's arduous Iditarod race, a growing attraction seems to be forcing aside old arguments. Then Reef catches Kirra sneaking from camp in the middle of the night. Kirra's uncle, a musher in the race, has disappeared. Kirra and Reef quickly track the man, but what they discover is harrowing: Frank's daughter has been kidnapped.

A relaxing day of rock climbing takes a disturbing turn when Kayden McKenna's route brings her face-to-face with a dead climber. Is it a terrible accident or something darker? When the case is handed to overburdened sheriff Landon Grainger, he turns to Jake Westin for help. With Jake's past now revealed, he's ready to use his talent for investigation again --- but he could never prepare for where the mystery will take him.

On the trail of a missing friend, reporter Darcy St. James is shocked to find Gage McKenna --- handsome and unforgettable as ever --- on board the cruise ship she’s investigating. She’ll have to enlist Gage’s help when it becomes clear that one disappearance is just the tip of the iceberg.

Piper McKenna’s prodigal brother, Reef, appears at her house covered in blood. A fellow snowboarder has been killed --- but despite the evidence, Reef swears he's innocent. Piper is frustrated with Deputy Landon Grainger’s need for facts over faith. With his sheriff pushing for a quick conviction, some unexpected leads complicate the investigation, and pursuing the truth may mean risking Landon's career.

Bailey Craig has reluctantly returned to her small Alaska hometown only to bury a loved one. But when dark evidence emerges surrounding the death, can she and a former flame move beyond the hurts of the past to find the murderer --- before Bailey becomes the next victim?