You're at home watching "CSI" when you hear a faint scratching at the door. Upon opening it, you see a small dog looking up at you. You examine the dog's collar and see a phone number and the message "If you find this cat, call this number immediately." (Yes, that's right, cat.) Against your better judgment, you call the number. Two hours later you find yourself in a basement with two dead bodies on the floor. What happened?