In an upscale high-rise in Chicago, a successful businesswoman is murdered as her boyfriend sleeps beside her; investigators point a finger at the boyfriend, but an exhaustive investigation uncovers the surprising architect of her murder.

A mother is shot to death while her young daughters lay asleep in the same room. Baffled investigators wonder if an open door invited an intruder in, or if the killer is someone else she trusted who has been in the house all along.

A third grader wakes up to a nightmare, finding his mother stabbed nearly 40 times in her bed. The police suspect those closest to her as their investigation uncovers the shocking evil that crept inside her house that night.

A young teacher's assistant is raped and fatally shot in the middle of the night. Her roommate, awakened by the noise, calls 911 and reports it as a suicide, beginning an intriguing mystery of motive, heartbreak, and a tragic discovery.