Was this a lock too lock you in or lock things out hon? I had a thing with a lock when I was a kid too and was pretty scary. The lock was too lock me in, so it was on the outside of the door. One of those hooks. Kind of freaks me out when I see one but I am not real sure the exact memories of it. All I can recall at this point was it was on the outside of a bedroom so my brother and I were actually locked inside.
Your thread makes me just want to give you a huge hug,
Cher