Five things that led to Zimmerman's acquittal

3. The teen who spoke to Martin

She was on the phone with Martin moments before he was shot and was considered a key prosecution witness. But Rachel Jeantel initially resisted coming forward.

"She did not want to get involved in this in no way possible," Martin family attorney Benjamin Crump told reporters Saturday.

During two days of testimony that was at times tense and combative, Jeantel described her conversation with Martin.

When defense attorney Don West challenged her story, suggesting Martin attacked Zimmerman, she responded: "That's retarded."

Jeantel testified that Martin told her he was being chased by a "creepy-a** cracker."

"This was a disaster," criminal defense lawyer Mark Geragos told CNN's Anderson Cooper the day Jeantel testified. "This was the star witness, the star witness. The wheels came off and it was a train wreck. And there's no other -- there's no way to soft-pedal it."

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