Robert Bierenbaum News Today

He attempted to define evil by plumbing the biographies and motivations of hundreds of violent felons who had committed heinous crimes.

A murderer fleeing town, only to settle in a quaint community to start a quiet life sounds like an overused trope. However, that is what happened in Minot over 25 years ago. Dr. Robert Bierenbaum was a plastic surgeon and a cherished member of the community. He moved to Minot in 1996.

Former plastic surgeon Robert Bierenbaum was convicted of murdering his wife Gail Katz in 2000 but long maintained his innocence.

Ana Walshe hasn't been seen since the early morning hours of Jan. 1, 2023, shortly after she rang in the New Year at her family's Cohasset, Massachusetts home.

The decades-old murder case involving vanished college freshman Kristin Smart is complicated, to say the least -- especially since the 19-year-old's body has never been found.

NEW YORK -- A former Grand Forks plastic surgeon lost another appeal of his conviction for killing is wife 25 years ago and, prosecutors allege, dumping her body in parts in the Atlantic ocean.

More than 20 years ago, prosecutors used circumstantial evidence to convince jurors that plastic surgeon Robert Bierenbaum murdered his wife and threw her body into the Atlantic...

Robert Bierenbaum was convicted of the murder of Gail Katz in 2000 due to circumstantial evidence but had always denied involvement in her death.

Although under suspicion, Dr. Robert Bierenbaum evaded criminal charges for 14 years due to insufficient evidence and, in part of that time, split his plastic surgery practice between Grand Forks and Minot. "20/20" explores "Jekyll and Hyde" attributes of successful surgeon and his relationship with his wife whose body was never found.

Watch full episode of 20/20 season 44 episode 3, read episode recap, view photos and more.