75-Year-Old Grandmother Allegedly Puts Hit on Former Son-in-Law in New Investigation

Did a 75-year-old grandmother really plot a murder? That’s the shocking question at the heart of the latest investigation on ’20/20′. Back in 2014, Dan Markel, a well-known law professor at Florida State University, was tragically killed in his Tallahassee home. As authorities dug into the case, they discovered a surprising lead: Donna Adelson, Dan’s former mother-in-law, might have been the mastermind behind the crime. The motive? A bitter divorce and custody battle between Dan and Donna’s daughter, Wendi. Now, after more than a decade of following this case, ’20/20′ is delving into the details with correspondent Ryan Smith. Get ready to uncover the twists and turns of this complex murder scheme in the upcoming episode titled “Meddler or Murderer?” airing on Friday, January 2nd at 9:00 p.m. EST on ABC, and available for streaming the next day on Disney+ and Hulu.

’20/20′ is a top-rated primetime program anchored by David Muir and Deborah Roberts, known for its in-depth coverage of true crime mysteries, exclusive interviews, and investigative reports. With over 45 years of experience, ’20/20′ continues to deliver compelling storytelling and high-profile stories. Don’t miss this special two-hour event on ABC, or catch it on your favorite streaming platform for a closer look at this gripping case.