Wednesday

A behavioral profile is helpful in a murder investigation, but it's not a road map to the killer. One such profile caused the Baton Rouge Police Department to search for the wrong man. They might not have made an arrest, had it not been for a DNA picture of the suspect, painted by a molecular biologist.

An obstetrician returned home from the hospital and found his wife on the floor of the bathroom; she was covered with blood, not breathing. He tried unsuccessfully to revive her, staining his clothes with her blood in the process, and then he called 911. His version of events was not supported by the blood spatter evidence, and investigators had to determine why.

When a writer lands a dream apartment, she immediately packs her bags and moves out there, but within four nights, she hears a terrifying scream.

A young woman's murder remains unsolved until someone comes forward to reveal her own harrowing story.