My basement storage door ( small door just ahead of man door ) won't open as latch bolt on one side won't release.
The latch bolt is spring loaded in closed position. There's a 3/16 " space on side of door and the latch retaining screws are visable. If I could get a drill bit in there and drill the screw heads out. The holddown bracket for the latch bolt would just drop out.
Tried a # one screwdriver, can't turn screw, rusted. # 2 is too big. I can't think of any other way
HAY ! 
I could
train my little grandson to crawl thru the upper pass thru storage ( it's only 9 " high) from the other side and releas the lock.
But he's only 12 months old.