California Teen 'Romeo and Juliet' Suicide Pact Goes Awry After Mom's Murder

Tylar Witt still brags about her mom. Joanne Witt's master's degree in mechanical engineering, her skill in the kitchen and her tomboy traits are all sources of pride for her teenage daughter. "She was a lot like a dad," Tylar said. "What other mom catches snakes and lizards and puts them in aquariums?" But the affection Tylar shows today was critically absent on June 12, 2009 -- the day, prosecutors say, Tylar helped her boyfriend kill her mother. Watch the full "20/20" episode,...Full Story
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