Murder by DPNs Solution

The assistant lied when she said she was almost hit by the door when the maniacal grandmotherly type woman came running out of the store (a red herring!). Ms. Dunnit very quickly picked up on that since she 'pushed' the door open when she arrived - the door opened in, not out. I fooled quite a few of you with this one! But five of you got it correct and the handy dandy random integer generator chose Libbie as this weeks winner! Congratulations Libbie on your fine criminal mind!