In 1999, 47-year-old Sunday school teacher Miriam Illes is shot by a sniper through her kitchen window in Williamsport, PA. Convoluted evidence and anonymous handwritten letters throw them off the scent, but the killer is right under their noses.

In 1985, pretty 23-year-old new mom, Linda Brown, is shot dead in her bedroom, and her 14-year-old stepdaughter Cinnamon confesses to the crime. The case is as good as closed, but detectives suspect there's more to this twisted family than meets the eye, and they're right.

In 1996, 24-year-old Vietnamese-American graduate student Thien Minh Ly goes out rollerblading on the night of the Superbowl. He never returns and is later found stabbed on the Tustin High School tennis courts. There is almost no evidence, and the case runs cold until detectives catch wind of a letter revealing the shocking truth.

At 11:00 PM on July 9th, 2004, 27-year-old graduate student and young father Jarrod Davidson is shot by a high-powered rifle outside his apartment in Santa Barbara, CA; lying next to him is a suspicious potted plant. He was in the middle of a nasty custody dispute but the DNA doesn't match his ex-wife, Kelee.

In 1994, 55-year-old Newport Beach millionaire Bill McLaughlin is shot dead in his mansion. The emotional killing and keys found in the door indicate a killer in his close circle but it takes detectives 15 years to get to the bottom of this twisted case.

In 2004, 31-year-old Julie Keown dies of antifreeze poisoning in Waltham, MA. Detectives rule out suicide and accidental ingestion. Then, after untangling a web of lies, they turn to her husband, James, a popular radio host.

A Bronx, NY, 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.

An Orthodox Jewish mother 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.

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.

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.

When a woman is murdered in Milwaukee in 1981, her sons describe a masked man with a ponytail fleeing from the home, and police investigate the victim's rancorous ex-husband and a neighbor who claims his gun was stolen. Police make a shocking arrest, but some have doubts to this day.

When a single mother is stabbed to death in her home in Cape Cod, MA. The numerous suspects include her child's father, his wife, and her eccentric father's young girlfriend.

When an Orlando woman goes missing 15 years after the departure of her abusive husband, investigators wonder if her grieving children know more than they're saying.

It's a brutal scene when Karen Gregory is raped and stabbed in her boyfriend's Gulfport, FL, home. After Detective Larry Tosi enlists the help of his firefighter friend, George Lewis, to solve the crime, the case takes a shocking turn.

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.

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?

Miami businessman Henry Diaz goes missing the night before a family vacation. His business success has earned him many enemies... even within his own family. But before police can figure out who killed Henry Diaz, they'll need to find his body.

Middle-aged couple Carmen Quinones and Ruben Frederick are brutally stabbed to death in their East Harlem apartment next to $16,000 in cash. Were they murdered for their money, or something far more personal?

A car pulls into a Long Island gas station with a mother shot dead in the front seat. Her husband claims a stranger shot her on the highway, but he's foggy on the details. Is this a case of deadly road rage, or does he know more than he's telling?

Two beautiful dancers are strangled in their West Harlem apartment. The case will lead cops all across New York City, where dreams of fame and stardom can drive young people to desperate measures, and devour them along the way.

27-year-old mother Dana Satterfield is found brutally raped and strangled in her South Carolina hair salon. Detectives soon discover they're chasing a dangerous killer who may not be finished.

A Belgian honeymoon comes to a tragic end when a freak car accident leads to a tragic death. The investigation takes police down a rabbit hole of violence and deceit, culminating in an international manhunt for a calculating killer.

Diane Girts is found dead in the bathtub of her home adjoining her husband's funeral home, and nobody can determine exactly how she died. As the case unfolds, detectives will uncover troubling clues pointing to a cunning and dangerous killer.

44-year-old masseuse Larissa Macriello vanishes from her Miami apartment in June of 2013. Police find there's a dangerous edge to her carefree lifestyle, and they're thrust into a web of sex, lies, and secrets as they try to find her.

In 1988, a Burbank couple is shot in their own home – husband Dan Montecalvo survives, but wife Carol dies in the hospital. The investigation will reveal a dubious past, and a scheming killer who almost got away with the perfect murder.