20/20 – October 22 2021 – Robert Bierenbaum – ABC

On Friday October 22 2021 at 10 p.m. ET/PT and 9 p.m. CT, ABC broadcasts an episode of 20/20, reporting on Robert Bierenbaum, a plastic surgeon and expert pilot who was suspected of murdering his wife Gail Katz-Bierenbaum, but was able to evade charges for 14 years until prosecutors discovered a doctored flight log from the day she vanished.

Scroll down below to watch an official preview and summary of tonight’s episode titled “Do No Harm”.

‘20/20’ Reports on the ‘Jekyll and Hyde’ Story of an Upper East Side Surgeon and How a Doctored Flight Log Linked Him to His Wife’s Mysterious Disappearance 14 Years Later

Two-Hour Program Features Exclusive Interviews With Women Former Surgeon Robert Bierenbaum Dated After Wife’s Disappearance and Rare New Interviews With Wife’s Close Family and Friends

On the surface, Robert Bierenbaum seemed to have it all – he was a surgeon, a skilled skier, a gourmet chef, fluent in multiple languages, and an expert pilot. But just like “Jekyll and Hyde,” he had a much darker side lurking underneath. He was also a violent and controlling abuser, and his wife, Gail Katz-Bierenbaum, confided in friends she was afraid of him. Although authorities suspected him in Katz-Bierenbaum’s 1985 disappearance from their Upper East Side apartment, insufficient physical evidence allowed him to evade charges for fourteen years. He used that time to carefully craft a new life across the country until prosecutors discovered a doctored flight log from the day Katz-Bierenbaum vanished, and his lies finally caught up with him.

A new two-hour “20/20,” with reporting by ABC News anchor John Quiñones, features exclusive interviews with women romantically involved with him after he left New York City, including the first interview with Stephanie Youngblood, who denied his proposal and now reveals surprising new details about their relationship; and Karen Caruana, who opens up about dating Bierenbaum just weeks after his wife went missing; as well as an exclusive interview with Barb Cooper, the nanny for Bierenbaum’s child with his second wife.

20/20” also features rare home videos of Katz-Bierenbaum; never-before-seen photos of Bierenbaum; a new interview with Alayne Katz, Katz-Bierenbaum’s sister who has been on an unrelenting quest for justice since her disappearance; and a rare interview with Denise Kastenbaum, Katz-Bierenbaum’s closest childhood friend who discusses Bierenbaum’s suspicious behavior after Katz-Bierenbaum vanished. Other interviews include Daniel Bibb and Steve Saracco, the original prosecutors; Virgilio Dalsass, the missing persons police officer who was the first on the case; and Judge Leslie Crocker Synder, who sentenced Bierenbaum to 20 years to life in prison.

“20/20” airs on Friday, Oct. 22 (9:01-11:00 p.m. EDT), on ABC.

20/20 “Do No Harm” – Robert Bierenbaum Episode Videos

By 1990, Robert Bierenbaum had relocated to Las Vegas and started dating Stephanie Youngblood. For Friday’s new 20/20, Youngblood describes the “tipping point” in their relationship, an incident where she said Bierenbaum exploded with rage at her. She later left him.

Why did a handsome doctor, pilot, husband – really kill his wife? The only thing more shocking may be how he tried to cover up the crime. John Quiñones reports on the murder of a prominent doctor’s wife.


On July 7, 1985, Gail Katz disappeared. At the time, Gail’s husband Robert Bierenbaum told her family and police they had a fight at their apartment and Katz stormed off. He claimed to have stayed home. Gail’s sister wasn’t buying his story.

“We want you to be a survivor.” Alayne Katz says she is a “living tribute,” working to honor her sister Gail’s legacy after her death more than 35 years ago. Today, Alayne is sharing her message to victims of domestic violence and their families today.

On the surface, Robert Bierenbaum seemed to have it all – he was a surgeon, a skilled skier, a gourmet chef and an expert pilot. But over time, a darker side began to emerge.


About 20/20

The hourlong broadcast includes insightful interviews with notable figures from the worlds of news, politics and entertainment, hosted by David Muir and Amy Robach. A revolving team of journalists from ABC News also contribute investigative stories.

This show is broadcast on ABC, also known as the American Broadcasting Company.

Latest Episodes of 20/20

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1 Response

  1. Karen Shapiro says:

    I am wondering why when advertising about the 20/20 episode tonight, October 22, 2021 about Robert Bierenbaum that is is necessary to point out that he is a Jewish doctor. Why not say that he is a doctor instead of pointing out that he is Jewish. You wouldn’t say a Christian or Black doctor. There is so much anti-semitism and hatred in the world, why mention any religion?

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