INTRUSION - Young widow Elisabeth Buckley sleepwalks through life until her best friend's murder changes everything. To avenge his death and salve her own conscience, Elisabeth plunges into the high-stakes world of a Boston biotech firm where a ruthless killer stalks his prey. Along with her makeup maven pal Candace, Elisabeth confronts a host of suspects including a randy cardiologist, a cash-strapped scientist and a gorgeous Frenchman who makes her dizzy. Can she find the murderer and reclaim her own life, or is Elisabeth the next victim?