Door handle screw size?
 

The driver's side door handle on my car seems to be missing the lower screw that attaches it to the door. (this is not the screw under the mirror control) Every time I close the door, I feel like I'm going to rip off the handle.

Does anybody know what type/length of screw I need to replace it? I suppose I could just take out the screw on the passenger side but I don't feel like fumbling around outside in the dark at the moment...

Thanks!