FL Matriarch Convicted in Murder-for-Hire Plot of Son-in-Law

In a case that reads like a gripping crime novel, the wealthy Florida matriarch Donna Adelson was found guilty on September 4, 2025, of orchestrating the 2014 murder-for-hire killing of her ex-son-in-law, Daniel Markel, a respected law professor at Florida State University. This shocking verdict, delivered in a Tallahassee courtroom, exposed a dark clash of family loyalty, bitter custody battles, and cold-blooded violence that captivated the state for over a decade.

A Dramatic Courtroom Moment

The courtroom drama reached a fever pitch when the jury announced their guilty verdicts on charges of first-degree murder, conspiracy, and solicitation. Donna Adelson, 75, erupted in an emotional outburst, shouting “Oh my God!” and sobbing uncontrollably, as reported by the New York Post. The judge swiftly intervened, admonishing her to regain control and temporarily clearing the jury from the courtroom to maintain decorum. After a brief recess, Adelson composed herself, but the tension in the room was palpable as the trial’s long and sordid story came to a head.

The Bitter Custody Battle That Sparked a Deadly Plot

At the heart of this tragic saga was a bitter custody dispute between Daniel Markel and his ex-wife, Wendi Adelson, Donna’s daughter. Following their 2013 divorce, the couple shared custody of their two young sons. However, Wendi sought to relocate the children nearly 400 miles from Tallahassee to South Florida to be closer to her family. Markel, deeply rooted in his academic career and life in Tallahassee, refused to allow the move. A judge sided with Markel, blocking the relocation and intensifying the family tensions.

Prosecutors argued that Donna Adelson, the matriarch of a wealthy family with a lucrative dentistry practice, harbored deep resentment toward Markel for standing in the way of her daughter and grandsons’ move. They painted her as the mastermind who orchestrated the murder-for-hire plot, funneling more than $100,000 to hire hitmen to eliminate Markel. The killing was brutal and calculated: Markel was shot twice in the head at point-blank range in his Tallahassee garage on July 18, 2014, and died 14 hours later in the hospital.

The Web of Conspirators

Donna Adelson was not alone in this deadly scheme. Her son, Charlie Adelson, a Florida periodontist, was convicted in 2023 of the same charges and is serving a life sentence. Charles’s former girlfriend, Katherine Magbanua, acted as the intermediary between the Adelsons and the two hired gunmen, Sigfredo Garcia and Luis Rivera. Both men, affiliated with the Latin Kings gang, carried out the assassination. Garcia, identified as the triggerman, received a life sentence, while Rivera cooperated with authorities and is serving a 19-year sentence.

Wendi Adelson, despite being at the center of the custody dispute, has consistently denied any involvement in the murder plot and has not been charged. The case, however, revealed a family torn apart by greed, control, and vengeance.

The Matriarch’s Attempted Escape and Arrest

Donna Adelson managed to avoid arrest for nearly a decade after Markel’s death. It wasn’t until November 2023 that she was apprehended at Miami International Airport as she attempted to board a one-way flight to Vietnam, a country known for its no-extradition policy with the United States. Adelson reportedly claimed she would have cooperated with US authorities if sought, but authorities say she was clearly trying to evade justice. Her arrest marked a turning point in the long-running investigation and trial.

The Emotional Toll on the Victim’s Family

The impact of this crime rippled far beyond the courtroom. Daniel Markel’s mother, Ruth Markel, delivered a poignant impact statement after the verdict, expressing profound grief and heartbreak over the loss of her son, whose life was cut tragically short at 41, as reported by the Associated Press. She spoke of the unimaginable pain her family has endured for 11 years, a sentiment echoed by Markel’s father, who wished for a long sentence for Donna Adelson, hoping she would spend her remaining days reflecting on the harm caused.

What’s Next: Sentencing and Reflection

While the jury’s verdict has brought a measure of justice, the sentencing for Donna Adelson has yet to be scheduled. The judge has set a case management hearing for mid-October, where the next steps will be determined. Given the gravity of the charges and the high-profile nature of the case, the sentencing will be closely watched.

This case is a stark reminder of how wealth and family loyalty can sometimes mask darker impulses, leading to tragic outcomes. It also highlights the complexities of custody battles and the lengths to which some will go to control family dynamics.

What You Can Take Away

For you, the reader, this story offers a chilling glimpse into the intersection of privilege, power, and crime. It underscores the importance of vigilance in family disputes and the devastating consequences when conflicts spiral out of control. While the details are harrowing, the resolution of this case brings hope that justice can prevail, even in the most tangled and painful of circumstances.

As the legal process continues, the story of Donna Adelson and Daniel Markel will remain a cautionary tale - a true-crime saga that blends emotional suspense with the cold mechanics of the justice system, reminding us all of the fragile line between loyalty and lawlessness.

References: Florida matriarch convicted at trial in murder-for-hire killing of her former son-in-law | Fla. Matriarch Bawled After Conviction for Masterminding Murder of Ex-Son-in-Law - and Judge Wasn’t Sympathetic | Donna Adelson reprimanded over Florida courtroom outburst as she’s convicted in masterminding murder-for-hire plot of ex-son-in-law