Lanny Alan Horwitz, 66, was found dead in his Jupiter, Florida home on September 30, 2011. Authorities initially treated the scene as a possible suicide because an empty revolver was nearby, but investigators later determined Horwitz had been shot nine times, including once in the mouth. The number of wounds and the absence of gunpowder residue on his hands led investigators to conclude he could not have shot himself and that his death was a homicide.

At the time of his death Horwitz lived with his ex-wife, Donna Horwitz, and their son Radley. Donna and Lanny had married and divorced twice and had recently reconciled despite ongoing tensions. Donna’s diary reportedly expressed jealousy and suspicion about Lanny’s business associate Francine Tice, whom Donna believed was involved with Lanny. Investigators focused on the family’s volatile relationships and financial disputes during the probe.

Donna Horwitz was arrested and charged in connection with Lanny’s death; prosecutors argued jealousy and financial dependence provided motive, while the defense sought to implicate Radley. Anyone who knew the family or saw Lanny in Jupiter around late September 2011 is asked to share information.