Denise Franklyn has known Mackenzie Vaughn since she was a little girl. He's been her best friend through all the good and bad. For a time they drifted apart, but when trouble comes knocking on his door she's there for him.

Mackenzie Vaughn's career as a surgeon involves lots of tension, and rapid decision making. When someone kills his boss after a confrontation, Mack quickly becomes the prime suspect. Thankfully Denise is by his side as his name is cleared.

But the bodies keep dropping. All are individuals are all linked to Mack. When the FBI are called in all Mack can do, and hope for, is to keep Denise safe from what's quickly becoming some very dangerous circumstances.