Credit Card Knife Door Locked No Key? Can't Use A Credit Card Or The Butter Knife Trick =(.?

Door locked no key? Can't use a credit card or the butter knife trick =(.? - credit card knife

There is also a cat, but it is supposed to be there, because I have a friend who came over those who had. The thing is, we were then blocked for some catnip to our other cats, but when we left seems somehow. Now we are blocking key (to my knowledge) and how they are in a corner of the door, we can not use a credit card or nothing. (The Castle) Now the door is closed, and I do not know if we still have a key to unlock. Parents will be home soon?

PS. Why is there a closing door or lock to turn, w e / in the door, so you can connect? I understand the sliding locks and chains, which are on the inside to have to close it, but it seems impossible to be a little silly, from a room in my house.