Crime Scene Investigators, A Foster Kid Found Floating

In an affluent D.C. suburb, a successful luxury car salesman is gunned down execution-style in his bed. The arrayed evidence eventually lead investigators to Mississippi, and back as they close in on an unlikely assassin with a chilling motive.

The victim of foul play, a missing 16-year-old from Delaware, is discovered floating off the coast of New Jersey's Cape May. And as the scant evidence reveals hidden clues, a high-flying homicidal plot begins to unravel.

A tightknit community is shattered when its school superintendent is gunned down at his upstate New York home. And law enforcement's big break comes when a panic-stricken caller claims to know who the killer is.

Louisiana investigators find Andrew Jasmine in front of his home video game console, riddled with bullet holes. And with shell casings from two different firearms, the crime scene bears the hallmarks of a criminal conspiracy.

In the aftermath of an apartment fire, Missouri firefighters discover the body of 23-year-old single mum Melanie Breckle. It's clear she was the victim of a violent assault, and that her killer lit the fire to cover his tracks.

When a 36-year-old artist and mother of three disappears in Upstate New York, it's up to investigators to figure out what's hiding amidst an online gamer crush, a best friend's betrayal, and a timeline that just doesn't add up.