Caption: (L-R) Caryn Kelley and Phillip Peatross

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A lover is shot dead. Police record a cell phone video in the aftermath. But will the grainy footage be enough to clear or convict a girlfriend? Troy Roberts and 48 HOURS investigate the death of Phillip Peatross and what happened in the bedroom of his girlfriend, Caryn Kelley, in “Wounded by Love,” to be broadcast April 5 (10:00 PM, ET/PT) on the CBS Television Network.

The story began in Kelley’s Orlando, Fla., home, in the dark, early morning hours after a night where the couple has been drinking. It’s a case that involves broken hearts, bombshell secrets and a controversial cell phone video shot by police moments after the death of Peatross.

“I jumped out of bed, grabbed the gun, and heard footsteps coming down the hallway toward my bedroom,” Kelley tells Roberts as she recounts that fateful night. “The gun was cocked because I didn’t know who it was, because I felt like it was an intruder.”

Kelley told police she then realized the “intruder” was actually her boyfriend, Peatross. Kelley became the only living witness to what happened next. Kelley says there was a struggle for her gun. “And he told me twice, ‘I’m not going to live my life without you.’ And he shot himself,” she tells Roberts.

The police had to sort out three scenarios – either Peatross’ death was an accident, suicide or murder.

“There’s no way that he would have ever killed himself,” says Peatross’ previous girlfriend, Tamara Lawton. “He wouldn’t leave his children. He loved those girls, loved them like I’ve not probably seen in any father.”

Police were leery of Kelley’s story. They interviewed her on cell phone video immediately following the shooting. That video became important to the case when police claim she changed her version of what happened that night a couple of times in later interviews. Famed Orlando chief medical examiner and reality show star Dr. Jan Garavaglia also had doubts about Kelley’s version of events.

“If you point a loaded gun at somebody or bring a loaded gun out into the argument, and that gun goes off and kills somebody, that’s not an accident,” Garavaglia tells 48 HOURS. “That’s a homicide.”

Kelley was arrested and charged with Peatross’ murder. But could prosecutors use what they say are Kelley’s different versions of the night Peatross died - along with Garavaglia’s autopsy findings - to build their case and get a conviction?

Roberts and the 48 HOURS team tell the story through interviews with Kelley, her attorney Diana Tennis, Dr. Garavaglia, Peatross’ friends and trial testimony. 48 HOURS: “Wounded by Love” is produced by Paul LaRosa and Michele Feuer. Alicia Tejada is the field producer. Anthony Batson is the senior broadcast producer. Susan Zirinsky is the senior executive producer.

Chat with members of the 48 HOURS team during the broadcast on Twitter and Facebook.

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Press Contact: Richard Huff   212-975-3328  huffr@cbsnews.com