Investigation Discovery HD

Singer Christina Grimmie went from internet sensation to international superstar with her performance on "The Voice"; among her legions of fans was someone whose obsession would bring her dreams to a tragic end.

With flashy characters and lavish lifestyles, the Real Housewives franchise has captivated audiences for nearly 20 years; behind the mansions of Orange County and Salt Lake City, tragedy and criminal activity have shaken their glamorous world.

With flashy characters and lavish lifestyles, the Real Housewives franchise has captivated audiences for nearly 20 years. Behind the mansions of Orange County, Salt Lake City, and beyond, tragedy and criminal activity have shaken their glamorous world.

Amanda Perrault's dream move to a lake house with her husband and his young daughter turns into a nightmare; a campaign of abuse and terrifying home invasions lead to murder; a sheriff must outwit a calculating killer and bring justice.

Oklahoma newlywed Rex Harper is shot dead at the wheel of his truck on Main Street in what investigators believe is a professional hit; with no witnesses or clues, detectives must crack the cowboy code of silence to reveal the key to his killing.

A prairie-town sheriff uncovers a drug ring that includes its most powerful law enforcement officials; to help bring them down, he calls in the FBI; just before the trial, the ring's kingpin makes a deal, and days later, he's dead.

Single mom Karen Petersen is enjoying a night out when a handsome cowboy charms his way into her home; he attacks her, leaving her for dead, and as more victims emerge, cops fear a serial killer is on the loose.

In August 2000, 17-year-old Jessica Carpenter is found murdered in her Aiken, S.C., home by her mother; local reporters and family members tell the story of a town frozen in terror as police search for a possible serial killer on the loose.

In March 2014, North Carolina High School freshman Danielle Locklear slips out to see a friend but never returns home; as hours turn to days, her family members as well as the townspeople begin to wonder if a killer could be in their midst.

Alisha Sidie disappears from a small vacation town in Wisconsin in 2008; family, friends, local reporters and police investigators recall the fear and sadness the crime instilled on their tight community.

After teenager Candace Hiltz is shot dead in Prison Valley, the police pursue her troubled brother, James; with no evidence against him, the case goes cold until 10 years later when evidence is discovered in a police officer's storage unit.

When Lea Porter goes missing in Prison Valley, her family members set out to find her; their investigation leads to the discovery of the killer's true identity; as the killer evades arrest, Lea's brother devises a plan to make him confess.

When Jim Durgan's body is found in Prison Valley, no one knows why; his estranged wife is drawing a blank and his out-of-state girlfriend can't explain it; what follows is a murky investigation that unravels a sinister murder plot.

In November 2019, Sheena Gibbs travels back to Chicago from Muscatine, Iowa, after caring for her mother and becoming estranged from friends; she is never seen or heard from again; as friends search for her, her case becomes even more mysterious.

On Jan. 2, 2021, 26-year-old Kirsten Breuggeman leaves her boyfriend at a bar and takes off on her own; a security camera picks her up walking down the street, but it glitches out, and she vanishes from view.

Tracing the time immediately before an individual vanished for critical clues about the disappearance.

Dia Abrams owns several properties in the Idyllwild community of California, including a sprawling 116-acre ranch; on June 6th, 2020, Dia tells her partner, Keith Harper, she will feed the horses and is never seen or heard from again.

Tracie Bell, a beloved employee of the Cook County State Attorney's Office goes missing on March 6, 2018.

Kayla's mother pays a hefty price when she breaks free of her husband Richard; he plots a final and brutal revenge.

Domeneka believes she's found real love with her boyfriend, Michael. After having a daughter together, he reveals his violent side, and Domeneka fears there's no keeping him from following through on his threats, and that she'll be his next target.

A detailed investigation into the 1975 disappearance of Sheila and Katherine Lyon, two sisters in Wheaton, Md., whose case was reopened after nearly 40 years when a police detective came across a potential lead.

Domeneka believes she's found real love with her boyfriend, Michael. After having a daughter together, he reveals his violent side, and Domeneka fears there's no keeping him from following through on his threats, and that she'll be his next target.