Investigators tried to figure out what led a bright but painfully awkward 20-year-old to slaughter 26 children and adults at a Connecticut elementary school. | More Info

Who was Conn. shooter Adam Lanza?

AP

Investigators tried to figure out what led a bright but painfully awkward 20-year-old to slaughter 26 children and adults at a Connecticut elementary school.

Who was Conn. shooter Adam Lanza?

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