Picture Perfect

A Camera Captures A Forbidden Romance, But Will It Also Expose A Killer?

(CBS)  Investigators believe that Jodi left her home in California with the gun and the knife that killed Travis, although neither was found at the crime scene.

"A crime of passion, everybody knows, is usually in a domestic violence situation," Detective Esteban Flores explains. "In a crime of anger, such as this one, there were calculations that were -- there were calculations that were taken beforehand."

As for motive, investigators believe it couldn’t be clearer. "Jealousy is one of the main motives in a lot of homicides,” says Flores.

And with Travis’ family and friends as witnesses, the prosecutor should have no trouble proving it.

“She was just obsessed with him. You know? And she-- she didn't want my brother to move on with his life,” says Samantha Alexander.

They say that ever since their breakup, Jodi did everything she could to keep Travis single.

“She just haunted him," Chris Hughes explains. "Every girl that he got in his life, she would text and send these crazy e-mails. You know, you're a whore and… you shouldn't date Travis."

And they believe that Jodi may have been stalking Travis, as well.

“He had an incident a few months before he died, where his tires got slashed. The very next day after getting his fixed, his tires got slashed again at a different location, which means somebody was following him around,” says Samantha.

Chris says that towards the end of his Travis' life, Travis was scared of Jodi.

“There are some indications that maybe she was involved with slashing tires," says Flores, "but there's no proof to show that.”

Without that proof, Jodi has just one answer for her accusers: they're dead wrong.

“In the police report, I discovered afterward that friends and family said that I was a completely -- the verbiage was 'completely obsessed with Travis.'"

When asked if she contacted anyone or tried to create trouble for anyone Travis was dating, Jodi says “Absolutely not. That's a little extreme for me.”

“So, why is there this perception that you were this stalking, obsessive ex-girlfriend who just wouldn't let him go? Why do you think that's out there?” asks Maher.

“I think it's because we continued to hang out in the manner that we did. And we continued to travel a lot, after we broke up,” she says.