"A wealthy businesswoman disappears from her Glasgow home without a trace, leaving her husband and children panicked but strangely resistant to questioning. Tracing the woman's cell phone, police detective Alex Morrow discovers a call made from an unlikely location. A sleepy seaside community, Helensburgh is the last place you'd go looking for violence. But Morrow's investigation uncovers disturbing clues and a dead body in a nearby lake. When a connection...