No one tried to break into your car. . The lock has a nut on the inside of the door to hold it into place . It prolly came loose and fell off . Chances .
Look into the jimmi jammers door handles and the ravelco anti theft. the door lock on to get in the car..why can't we just TAKE the lock mech.
This lock has a knob on the inside of the car that can be pulled up or pushed down. You see these locks all the time in horror movies when the character is trying to get away! If you pull the knob up, the door is unlocked. If you push it down, the door is locked.
Find great deals for door lock assemblies at Carparts.com.. comes off, push in the thumb tabs of the switches to take them out from the door handle panel.