Does not bark, does not bite but does not let enter a house. This riddle is about a usual lock. But there are locks that let in but do not let out. A business woman’s has such a lock in her apartment. It was broken and it was impossible to unlock it from inside. Once on the New Year’s Eve someone secretly got into a house. It was Stella’s lover, ex-husband and her colleague. Each of them sneaked into the house with their own interests and was locked but they managed to free themselves from the burden and happily celebrate the New Year.