A K-9 team in the crosshairs — and seeking justice.

While tasked with protecting Trevor Gage from a serial killer, K-9 Officer Hannah Scott inadvertently puts a second cold case murderer on their trail. The man who drowned Hannah's childhood friend is back — and he wants to make Hannah his next victim. Guarding Trevor becomes a survival mission once they both become the target of ruthless criminals. On a remote island with only each other to rely on, there's nowhere to run. And with twice the deadly traps, any misstep could prove fatal.