four hours late. your fees at work. a brazen move by three thieves did not sit too well with a walmart shopper near houston. so she decided to take action of her own. mother of two was barely 5 feet tall but that did not stop her from single-handedly taking on all three men. as eric barajas reports the dramatic face-off was all caught on tape. >> reporter: when three brothers walked into a walmart sunday they planned on drinking three cases of beer for free. another shopper that despises crime could not stop herself when she saw them walking out without paying. >> i told the cashier, do something, they're leaving. she couldn't do anything so i told her, watch my purse. >> reporter: as the three thompson brothers walked to their camaro, parked in a fire lane, monique lawless gave chase. leaving her spot in the checkout line. since the brothers had a hard time opening the locked camaro it gave lawless plenty of time to catch up. with adrenaline at full throttle she jumped on the hood and