He first saw Dr. Nika Pulaski hyperventilating in a trapped elevator. Ever the rescuer, Detective Cole Baker felt an instant protectiveness…and sizzling want. Her cheerfulness, not to mention her killer looks, had him reconsidering his loner status. But he couldn't trust her, the prime suspect in a rash of hospital deaths.Who was Nika Pulaski? She outlasted her colleagues at the hospital and spent every minute caring for others. But patients were dying. With every tear she shed, Cole couldn't mask his own emotions, this pull toward a potentially dangerous woman. He raced to find the killer stalking Nika's patients, even if it was the woman he loved. Was she an optimistic healer or a sociopath?