An Orthodox Jew finds her daughter strangled to death in their Staten Island home. Her Muslim ex-boyfriend had been stalking her. Computer techs uncover a dangerous online dating habit. But the real killer was someone much closer to home.

A single mother is stabbed to death in her home one cold Cape Cod winter. Could it have been the father of her child - or his bitter wife? Or the young drug addicted girlfriend of her eccentric father? Everyone is a suspect in this small town.

A Bronx house fire reveals a charred body inside. Police learn it's 20-year-old Kimberly Antonakos, and she's been burned alive. Was it her ex-boyfriend, Psycho? Or is her father connected to the mob? The truth is far more tragic.

A business owner is shot to death outside his Bronx office. Police find he was deep in debt. Did his wife kill him or the insurance money? Or did he arrange a hit to provide for his family? Their only hope to solve the murder is to follow the money.

A Milwaukee mother murdered in 1981. Was it a masked man with a ponytail? Was it her bitter cop ex-husband? Or a neighbor who claims his gun was stolen? Police make a shocking arrest, but some still have doubts.

An Exxon oil executive goes missing in front of his New Jersey home. Police fear a medical emergency until a ransom note arrives from an eco-terrorist organization. As the case stretches on, the kidnappers' behavior grows more and more baffling.

It's a brutal scene when Karen Gregory is raped and stabbed in her boyfriend's Florida home. Detective Larry Tosi enlists the help of his firefighter friend to solve the crime. What comes next is something no detective wants to hear.

A young pregnant woman is raped and bludgeoned in California. It looks like the work of a serial killer called The Bedroom Basher. But when she regains her memory, she blames her husband. Is Kevin really the killer, or can DNA set him free?

A maid finds a woman dead in Room 305 of an Oregon hotel. Her grieving husband reveals an open relationship- was an affair to blame? Or had this Ivy League grad fallen into a life of drugs? Then a prostitute comes forward with a shocking revelation.

An Orlando mother goes missing fifteen years after her abusive husband left for good. Did he return for revenge? Did she flee from the law after collecting his social security all these years? Do her grieving children know more than they're saying?