Murder suspect's breakdown shown to jury

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The many faces of defendant Angel Perez were on full display during his police interview and the jury saw it all.

"Sir, I didn't mean to kill her, " Perez cries out to a police officer.

Perez breaks down emotionally when detectives tell him his girlfriend Olivia Miller, who he's accusing of shooting, is dead.

"Oh my God!" shouts Perez.

It's been nearly three years since Perez, prosecutors say, shot and killed his girlfriend, his brother-in-law, and his brother-in-law's girlfriend.

He did it, they say, in front of his 3-year-old nephew.

After the shooting Perez called 911 and was soon arrested.

During the trial, the jury watched hours of his erratic behavior on video. At one point, Perez claims to be possessed by a demon, but the detective wants him to quit playing games.

Detectives try everything to get Perez to talk about the shootings even giving him a cigarette, but nothing works.

Perez faces three counts of murder, if convicted he faces in prison. The trial continues next week.