A LAS VEGAS WOMAN'S ONLINE DATING RESULTS IN HER ATTEMPTED MURDER

Returning for its third season, "20/20: In an Instant" retells heart-pounding, first-hand accounts of the world's most harrowing tales of survival by bringing them to life through breathtaking dramatizations. The powerful series features gripping interviews with the people whose lives were on the line and those who were instrumental in helping them survive. Ordinary people stared death in the face and outlasted tremendous odds. What key decisions did they make to save themselves? A new episode of "20/20: In an Instant" airs SATURDAY, AUGUST 26 (10:00-11:00 p.m. EDT), on The ABC Television Network. (Rebroadcast. ABC OAD: 07/01/2017)

"In an Instant: Match Made in Hell"

When Mary Kay Beckman decided to give online dating a try, she was looking for a "healthy, loving relationship." Instead she found a psychopath who ended up?trying to kill her.

Beckman met Wade Ridley in September of 2010 and, within less than two weeks of dating, realized she didn't want to see Ridley anymore. Four months after the break up, Ridley hid in Beckman's garage. When Beckman got home that night, Ridley attacked her with a butcher knife, stabbing her repeatedly until it broke. Then, he stomped and kicked her and left her for dead. Beckman was fighting for her life when a neighbor called 911.

As Beckman was fighting to recover, police searched for her attacker and eventually discovered Ridley was already in custody for the murder of another ex-girlfriend whom he also found on a popular dating website. Ultimately, Ridley confessed to Beckman's brutal attack and was sentenced to up to 70 years in prison. Ridley killed himself in prison before standing trial for the murder of the other woman.

"20/20: In An Instant" is executive produced by Maria Awes and Andy Awes for Committee Films in association with ABC News' Lincoln Square Productions. Rudy Bednar is executive producer on behalf of Lincoln Square Productions.

About Lincoln Square Productions

ABC News' Lincoln Square Productions produces original content for broadcast, cable and digital distribution specializing in compelling ways to tell fact-based stories, including ABC's "What Would You Do?," "Madoff," "In An Instant" and the "Oscars(R) Opening Ceremony: Live From the Red Carpet," Investigation Discovery's "Barbara Walters Presents," as well as documentary programming for a wide array of partners, including PBS, Discovery Communications and A & E Networks. Lincoln Square Productions is wholly-owned by the American Broadcasting Companies, Inc. The headquarters are located in New York City's Lincoln Square neighborhood. Morgan Hertzan is senior vice president of Lincoln Square Productions.