TV Guide Investigation Discovery Friday

Questions and accusations fly after savvy entrepreneur and mother of five, 52-year-old Dee Warner, vanishes from her rural Michigan home.

Beth Karas takes a deep dive into real-life scandals, exposing bizarre secrets, shattered lives and twisted motives, uncovering deceit, greed and manipulation.

When Los Angeles native actor, Lloyd Avery II, reprises his most famous role and the consequences are deadly when fantasy and reality begin to blur.

Fan obsessions can be terrifying; an account from a celebrity with a relentless stalker exposes the very real dangers that come with living in the spotlight.

Small-time con man Lee Harris' son and a close friend contact Chris and Fatima to investigate what they believe to be a miscarriage of justice.

Ken Andersen and Chad Swedberg are childhood best friends, then Chad turns up dead on a wooded trail, and Ken takes the fall for his murder.

After 32 year-old Becky Brosnan, was reported missing by family members in February 2009, a post on Myspace announced that she had gone to find herself.

After 15-year-old Mikarah Sanders is fatally shot on New Year's Eve, police search for posts on social media and discover that her death was a crime of passion.

While hunting for clues in the case of 27-year-old single mother Ashley Melnyczok, police track down a cast of dangerous characters and uncover a heinous plot.

After 28-year-old Michael Sandy, of Brooklyn, N.Y., met a new friend on an online chatroom in October 2006, they arranged a meeting and was brutally attacked.

When 44-year-old high school Spanish teacher, Theresa Lockhart, of Portage, Mich., went missing in May 2017, her vehicle is discovered with nothing inside.

When John and Liz Calvert vanish in 2008 from upscale paradise Hilton Head, S.C., their friends and local reporters recall their shock and disbelief.

When 17-year-old Alexis Murphy disappears along the infamous Route 29 in August 2013, a search yields zero results, but then a security video reveals a clue.

After the torture and murder of a woman in her home, her ex-husband calls 911; a man turns up dead in a house fire and his wife tells police he was suicidal.

A woman falls to her death in the Rockies and her husband calls 911; a 3-year-old is found dead in a river, then her father calls 911 and becomes a suspect.

After a man's savage murder at home, his wife calls 911; a husband finds his wife with shots to the head, he claims it was suicide but police have their doubts.

When Aldo Pacheco becomes increasingly violent and unpredictable, Barbara Pacheco is forced to make a decision that will end up costing her life.

When the father of her children becomes increasingly violent and unpredictable, Brittany Steier must make a decision that will end up costing her life.

Brian and Cheri Hartman dote on their grandbabies and the close-knit family thrives, until a shocking betrayal changes everything.

Michelle Rogers and Matt Terry share a son, but Matt has a dark side that comes out when he drinks, and his rage explodes one night.

Lisa and Kevin Knoefel's selfless act ends in a shocking murder at the hands of the troubled teen, who is a pawn in a twisted plot.

After Andrea Yates' horrifying act, her dark preoccupation emerges; a secretive cult, twisted teachings, and followers drawn into a growing web of control.

Woroniecki traps his followers in an isolation cocoon, and his teachings appear to twist salvation into submission, until Andrea Yates commits a horrific act.

Andrea Yates faces two trials in the aftermath of the drownings, exposing the preacher's lingering influence. Woroniecki deflects blame onto Rusty.

After Andrea Yates' horrifying act, her dark preoccupation emerges; a secretive cult, twisted teachings, and followers drawn into a growing web of control.

Woroniecki traps his followers in an isolation cocoon, and his teachings appear to twist salvation into submission, until Andrea Yates commits a horrific act.

Andrea Yates faces two trials in the aftermath of the drownings, exposing the preacher's lingering influence. Woroniecki deflects blame onto Rusty.

Lisa and Kevin Knoefel's selfless act ends in a shocking murder at the hands of the troubled teen, who is a pawn in a twisted plot.

A man stops responding to his mother's texts, so she files a missing person's report and Det. Massucci finds himself untangling a complicated love triangle.

On May 13, 2017, Kimberly Avila goes missing in downtown Brownsville, Texas, and Kimberly may have been kidnapped or murdered by a member of the cartel.