Missing Movies

I take pride in my DVD library. I have all of my movies listed in a database and in alphabetical order on the shelves. I can do a quick sweep over the shelves and tell if there are any movies missing. This morning, I noticed there were a few gaps and I checked. There are 4 movies missing, Cabin Fever, Honey, The Rundown and The Haunted Mansion. I am livid!! I can't say who has them because I am not really home during the day. I have to put in a different system. I am not going to replace the missing movies. I will know my movies when I see them. Every movie that I buy, I put a unique mark on it. I hate to get ugly, but I will. I am the type person that is very friendly and will do all that can. I hate theives.