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The fatal stabbing occured in the small Chicago-area community of Mundelein, Illinois.
The fatal stabbing occured in the small Chicago-area community of Mundelein, Illinois.

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    Cops: Teen planned stabbing sister

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Cops: Teen planned stabbing sister

CNN's Don Lemon talks to Clinical Psychologist Dr. Jeff Gardere about a teen stabbing her younger sister to death.

Cops: Teen planned stabbing sister

CNN's Don Lemon talks to Clinical Psychologist Dr. Jeff Gardere about a teen stabbing her younger sister to death.