When newlyweds Joe and Olga Connell are gunned down outside their Wilmington, Del., home, police investigate a sibling rivalry, a business partnership plagued by drugs, and an outlaw motorcycle gang.

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A young Iowa man is shot dead while he sleeps peacefully next to his fiancée. Investigators wonder how she remained unharmed, and suspicion quickly swirls around her and two of her ex-boyfriends.

When the body of 43-year-old Tina Coronna is discovered in the backseat of her abandoned truck, detectives must piece together clues gleaned from the victim's emotional husband, his mistress, and a neighbourhood vigilante

When the badly decomposed body of Margarita Scott is found in the backseat of her estranged husband's missing SUV, investigators must interview everyone close to her to retrace her final steps.

Two young girls arrive home from school 10 days before Christmas and find their father dead; police narrow the timeline of the murder down to an eight-minute window before the girls walked in the door

A woman is gunned down in her garage after finishing a shift at work and investigators must search in vain for a motive in the brutal murder. When her boyfriend finds notes she wrote prior to the crime, the case is flipped on his head.

Snowplow King Randy Scheffield is found shot dead in his bed by his wife on the first snowy day of the season, and Ohio detectives look into Randy's business to establish a motive.

A two-bit Florida criminal is arrested while driving a stolen convertible that has blood in the backseat, and its owner, a 49-year-old hotelier named Sabine Musil-Buehler, is reported missing; the case expands to include a possible homicide

A retired man is horrifically murdered by an acid attack in Florida.

When a small-town Michigan couple is gunned down in their own home, footprints in the snow and loose lips will lead police to their killer.