On July 13, 1966, a man broke into a Chicago, Illinois townhouse where nursing students lived. Inside, he found three nurses, and, using a gun and a knife, forced them into a bedroom where three other nurses already were.
The man used torn strips from bedsheets to tie up the six women’s hands and feet, using nautical knots. By midnight, three more nurses returned home and were tied up as well, according to the History Channel.


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