: Most victims appeared to have voluntarily let their killer inside, leading police to suspect he may have posed as a repairman or delivery person.

: The killer often used the victims' own clothing—nylon stockings, bathrobes, or bras—to strangle them, frequently tying the items into distinctive, decorative bows.

Between June 1962 and January 1964, a series of 13 women—ranging in age from 19 to 85—were found sexually assaulted and strangled in their homes. The murders shared several haunting characteristics: