I can't do nothing because my iphone 5 with ios 7 is in lost mode

I found an iphone 5 and there's no sign of who it is but I connected it to iTunes on my computer because it was disabled. Then it showed me a message only one time saying that it wouldn't read it because it was in lost mode. So I can't see it anymore on iTunes and I'm stuck at the "iphone disabled screen"! All because it is in lost mode! How do I take it off or what do I do to get it started?! Help! Please don't respond saying to try and find the owner.

Don't try and find the owner, take it to an Apple store and they'll handle the situation.

Why do you call it "my iphone 5"? It isn't yours. Don't ask us to help you STEAL.