The woman gave the “signal for help” behind her back, Alhambra police said, according to The Los Angeles Times. The signal: tucking the thumb into the palm with the fingers closed on top of the thumb.

ALHAMBRA, Calif. (KCAL/KCBS) - Authorities in Southern California say a good Samaritan helped a woman escape a domestic violence situation at a convenience store. In this case, the woman used hand ...