When a hospital employee is found mysteriously dead on a Center City sidewalk, detectives uncover surveillance footage of the murder that leads straight to the doorstep of a suspected serial killer who may be tied to a string of unsolved crimes.

A respected and beloved chiropractor is found bludgeoned to death in his home outside Philadelphia. Investigators take a hard look at those closest to him, but soon learn the murderer is someone they least expect.

A young woman is found strangled and posed in the notorious Kensington neighborhood. When more victims are found assaulted in an eerily similar fashion, detectives race against the clock to find the perpetrator before he strikes again.

When a Costa Rican computer programmerin search of the American Dreamis found dead in his bathtub, detectives dive into a complex web of love, betrayal and organized crime, uncovering an unimaginable motive behind his brutal murder.

After a Philadelphia DJ is found brutally killed in a radio station parking lot, it sends shock waves through Philly's close-knit Puerto Rican community. Detectives untangle a web of deceit that proves the old adage that blood is thicker than water.

A secretary is found shot in the head inside a suburban Philadelphia church, putting the close-knit congregation on edge; as gossip and theories swirl, detectives unfold a strange tale of jealousy.

A beloved matriarch is found viciously murdered in her suburban Philadelphia home; detectives investigate the victim's inner circle and uncover a killer hidden in plain sight.

A grad student is killed in her Rittenhouse Square apartment; detectives follow clues across the country, uncovering a hidden evil that changes how Philadelphia investigates sex crimes.

When a college student and exotic dancer is found dead after being thrown from a bridge, detectives investigate the controversial players in Rachel's double life and come up with a killer they never imagined.