40 years later, Tylenol murder investigators order new DNA tests on key evidence

WHEATON, Ill. — Beginning on Sept. 29, 1982, and over the next week, seven people were murdered in the Chicago area after unknowingly taking Tylenol pills that were spiked by a killer. Now, investigators are turning once again to DNA evidence to try to identify the person or people who did it, report CBS Chicago's Dave Savini, Samah Assad and Rebecca McCann.

Laura Morgan was only 3 years old in 1982 when her mother, Linda Morgan, bought a bottle of Tylenol from her local grocery store to ease the pain of an aching leg.

Like several others, Linda didn't know the bottle she purchased contained pills poisoned with cyanide. But unlike the others, she survived.