A nurse's turbulent marriage flatlines when her husband dies from a lethal dose of liquid morphine.

A women's advocate and respected business owner snaps, turning a bitter custody fight into a plot for murder.

A young woman's scrapbook offers insight into a shocking crime. (original aired S6:E11)

A wife claims an intruder killed her husband, but the real mystery turns out to be the couple's secret lives.

An army reservist disappears, and his temperamental wife appears to have cooked the evidence.

Devoted to raising her daughter's child, a loving grandmother is found executed in her own home. Police unfold an ongoing custody battle which leads to suspicions towards those nearest to her grandchild.

A crime novelist's plot for her husband's untimely death takes an unexpected turn.

A multimillionaire's wife plots with her brother to put a permanent end to her husband's philandering.

An elderly woman's death leads to shocking revelations about her daughter's double life.

Engaged high school sweethearts met in 1991 as volunteers in the Texas Civil Air Patrol. She was an honor roll student bound for Annapolis, and he was a track star with an appointment to the Air Force Academy. This former Navy cadet was just 19 when she learned he had cheated on her. Her rival ends up dead but who did it?

A husband is shot to death on New Year's Day in January 2009.

A preacher's wife finds a sinful solution to a financial crisis and a troubled marriage.

The family of a former soldier questions whether or not his death was a tragic coincidence when they learn of a suspicious detail from his wife's past.

A teen love triangle ends with a missing girl, a dismembered body and three families changed forever in East Moline, IL. (also shown as S8:E12)

Two teen girls are brutally murdered - could one of their best friends be responsible?

A wife is charged with killing her husband, an attorney with financial woes - but was it a suicide, and was she wrongly accused?

A discovery in the woods leads police to a troubled marriage, a drug overdose and a deadly plot.

When a married teacher's student lover moves into the home she shares with her husband, a deadly love triangle is formed that leads to an emotionally driven murder.

In a shocking case in Missouri, a mother is left for dead and her baby stolen when she does the kindly thing and lets an unknown woman into her house to use the telephone.

A former teacher's plea of self-defense is called into question when secrets about her sordid secret work life are revealed.

After casually dating Katrina for less than a month, Eric is found dead in his apartment. The suspicious death leaves the police asking if it was a suicide, an intruder, or if Katrina has a deadly secret?

A wealthy female ranch owner's life of money, sex and drugs came to a halt when her boyfriend was shot.

When a teacher's husband leaves for a night out, his lover and his wife wait up for his return, having already prepared a deadly lesson.

After a married Canadian Air Force Major is found mysteriously slain in his driveway, police uncover a secret affair that could have led to his permanent grounding.

A college romance goes cold -- and ends with a murder that takes 22 years to solve.