The traumatized six-year-old boy hasn't said one word since the unsolved murder of his single mother. And now, the killer is after the child - and the devoted uncle raising him, Dr. Dylan Seabrook. Working undercover in the boy's school, DEA agent Paige Ashworth is determined to find the murderer. But she can't tell Dylan her real identity, what she knows - or just how close to the case she really is. Dylan's strength and fierce love for his nephew soon have Paige longing to join their family. First, though, they must catch a killer who never wants little Alex to speak again.

Detective James Holton has been honorably discharged from the Army Criminal Investigation Division due to wounds sustained when an IED blew up near him. Now with the Lake City Police Department, he's rooming with his good buddy and partner, Cole, while he figures out his family dynamics. Physician Assistant Lainie Jackson is eighteen months out from an attempted murder perpetrated by her ex, which ended when she managed to grab the weapon and shoot him. When he appears to have survived and is back to finish the job he started, Lainie insists it's not possible.

Having rescued Cassidy McKnight from kidnappers in South America, Gabe Sinclair thought his job was done. Not that the former Navy SEAL could ever forget the brave, beautiful single mother. But when the danger followed her home, Gabe promised to protect her. Why anyone would want to kill Cassidy was a mystery. Was the motive related to the orphaned toddler Cassidy was raising, a sweet little girl who brought out the father figure in maverick Gabe?

Pilot Dodge Kingston has always been the heir to Sky King Ranch. But after a terrible family fight, he left to become a pararescue jumper. A decade later, he's headed home to the destiny that awaits him. That's not all that's waiting for Dodge. His childhood best friend and former flame, Echo Yazzie, is a true Alaskan - a homesteader, dogsledder, and research guide for the DNR.

EMS helicopter pilot Penny Carlton is used to high stress situations, but being forced to land on a mountain in a raging storm with a critical patient - and a serial killer on the loose - tests her skills and her nerve to the limit. She survives with FBI Special Agent Holt Satterfield's help. But she's not out of the woods yet.