20/20 on ID

A drifter murders Italian fashion designer Gianni Versace

Two 12-year-old girls attack a friend in the woods, leaving her for dead; when questioned by police, the girls say a creature named Slender Man made them do it.

A brazen gang of diamond thieves leads police on a cross-country chase; the gang's high-flying ways may lead to their undoing

Maverick software company founder John McAfee goes on the run after being accused of murder while living in Belize

Toddler Cooper Harris dies after being left in a hot car; his father says it was an accident, while authorities say it was murder; during the trial, Cooper's grieving mother speaks out about what happened to her baby boy and stuns the courtroom

Threats turn an online romance into a nightmare

After a man is bludgeoned to death in his home, his wife and father-in-law claim it is a case of self-defense; then investigators take a closer at the crime scene, and the story of what really happened that night emerges.

An armored truck driver and his family commit a series of heists, eluding authorities for more than a decade; when one of them starts flashing money around, their plan for living the good life begins to crumble.

A shocking crime jolts a small town when a young woman disappears and is later found dead. The last person seen with her -- a mysterious figure in camouflage. Investigators focus on several suspects and one is convicted.

For more than 20 years, Larry Nassar, the doctor for the USA Gymnastics national team, sexually abuses young athletes in his care; finally, one survivor breaks her silence; now, a group of women comes together to tell their stories and seek justice.

In a football-crazed town, a star player and a teenage girl end up in a he-said, she-said controversy after a raucous party; investigators ask what happened when the two of them went into a bedroom during the party and closed the door behind them.

A wealthy community is shocked after a person dressed like a clown guns down a woman at her front door; suspicion falls on the victim's husband and his alleged girlfriend, but it will take more than 20 years until an arrest is finally made.

After spending 11 years in prison, Noura Jackson talks about the evidence that put her behind bars.

A mysterious figure threatens to expose the secret affair between two married politicians; despite a cover-up attempt, the situation spirals into a major public scandal, which ultimately derails multiple political careers.

A young woman is tried for sending text messages encouraging her boyfriend to commit suicide.

In Cape Cod, Mass., a writer is found murdered in her home, causing rumors to run rampant.

In Cape Cod, Mass., a writer is found murdered in her home; rumors run rampant, while investigators discover a tangled web of relationships; however, the community is unprepared the shocking arrest of a suspect who makes stunning claims.

A whirlwind romance between two doctors takes a dark turn fueled by revenge, secrets and obsession; after someone ends up dead, a voice from the grave sheds light on a murder plot

A woman is certain she knows who murdered her mother; after five years, the cold case turns hot, as investigators realize that a pillar of the community is hiding secrets.

A night of partying by fraternity brothers ends with one student dead and three wounded after a knock on the door leads to gunfire

A couple goes kayaking on the Hudson River, but only she returns alive; authorities piece together the clues and come to believe that she murdered her fiancé, while she insists his death is the result of a tragic accident.

After a brutal attack, a woman undergoes hypnosis to recover memories of the man who assailed her.

Identical twins are adopted into different families without their birth mother or adoptive parents ever learning the truth; now, this decades-old scandal is brought to light

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Jens Soering confesses to murdering his girlfriend's parents; investigators ask if he acted alone or was swayed by devotion to the woman he loved; they wonder if he was bewitched into confessing to a crime he didn't commit.

Six brothers are confined to a small New York City apartment for 14 years by their father; they watch thousands of movies before one brother decides to break free.

The so-called "Rehab Mogul," Christopher Bathum, owns more than 20 alcohol and drug treatment facilities in two states; however, some clients claim Bathum is a drug user and sexual predator who derailed their recovery

Dee Dee Blanchard takes care of her wheelchair-bound daughter, Gypsy Rose; then, Dee Dee is found murdered, while Gypsy goes missing; as police investigate, they uncover a tangled web of secrets, lies and betrayal.

Former NXIVM members allege that leader Keith Raniere operated a secret sorority within the group, one that treated women as slaves and branded them for life.

Newly pregnant 21-year-old Kelsie Schelling goes missing while visiting her on-again-off-again boyfriend; her mother's desperate search leads to a disturbing connection with another mother miles away.

A serial rapist and murderer terrorizes California for more than 10 years.