Radley horwitz today

When authorities first responded to a shooting at the Horwitz household in Jupiter, Florida, on Sept. 30, 2011, their first inclination was that Lanny Horwitz, the man slumped over dead in the bathroom, had committed suicide. After all, one of the people present, Lanny’s ex-wife Donna Horwitz, was reportedly repeating, “He’s so mean…He’s been saying he would do this,” while claiming to not be able to hear what anybody was saying when security guards arrived; their son, Radley, simply said he had heard gunfire.

But given the number of shots fired, the position of the bullet holes and the fact that there was an empty five-shot revolver found next to the victim, that theory quickly went out the window.

“I told everybody, ‘Stop right where you are — this is not a suicide,’” Eric Frank, a detective with the Jupiter Police Department, said in the latest episode of Oxygen’s true crime anthology series, “In Ice Cold Blood.”

Thus began the process of unraveling the drama surrounding the Horwitz family, and how Lanny ended up being shot nine times, including once in the mo

Lanny Horwitz was shot nine times in his Florida home on Sept. 30, 2011. There were two people in the house -- who pulled the trigger?


High school sweethearts Lanny Horwitz and Donna Carnevale, first and second from left, met in Buffalo, N,Y. Lanny's brother, Barry, far right, recalls many joyful memories in the years that followed, like this one at a costume party.

Watch: Love, Hate & Obsession

Donna Carnevale

According to Lanny's brother Barry, "Donna was a knockout. He [Lanny] didn't wanna date anybody else."

Young Lanny Horwitz set on success

In this photo, Lanny, 11, helps straighten his father's tie. Lanny's brother, Barry, left, told "48 Hours" that Lanny had his eyes set on success at a young age. By age 16, Lanny was selling real estate for his father, a successful Buffalo developer.

Dan Carnevale

Donna also came from a well- known family. Donna's father, Dan Carnevale, a Buffalo baseball hall of famer was the only man to ever play for, manage, and serve as general manager of the Buffalo Bisons.

Donna and Lanny wed

In 1967, Lanny and Donna marri

Produced by Sara Ely Hulse and Michelle Feuer

[This story first aired on Dec. 14, 2013. It was updated on June 28, 2014.]

Radley Horwitz was asleep at his parents Jupiter, Fla., home on Sept. 30, 2011, when he woke up to a nightmare.

"I still want to know exactly what happened that morning," he told "48 Hours" correspondent Peter Van Sant. "And I jumped out of bed ... and heard -- I-- I don't know how many shots."

Disoriented and defenseless with the house alarm blaring, Radley stayed in his room -- not knowing if the shooter would make him the next target.

"I was basically pacing back and forth in my room like a trapped rat. I was afraid to go out that door there," he said.

"You don't know who's been shot. You don't know who's got the gun in their hands," Van Sant noted to Radley.

"I could hear my mom screamin' my name," he replied.

"And then more shots and they were -- they were pretty-- pretty rapid ... I heard a real lot of -- of dry firing... I knew that the gun was empty," said Radley.

When the shooting stopped, Radley rushed down the hall into his parent's b

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