JeeMin is home alone after school; a stranger is knocking at the door. JeeMin's parents teach her what to do. JeeMin teaches her friend about strangers at the door when home alone. What Would JeeMin Do book series - written by Masters Lori and Matthew Brown Internationally recognized experts in martial arts and authors of: The Art of Defense: The Comprehensive Martial Art Fitness Guide. Masters Brown having a combined 57 years of experience teaching martial arts subjected around Self-Defense, Bully, and Stranger Safety.