It is not the best experience to be locked somewhere, even if it is your own bedroom. Besides, you really need to leave the place somehow as you are expected at a serious meeting shortly. So what to do and how to find the lost key? It should be somewhere around. So you need to start examining all pieces of furniture here. Be very attentive not to miss the slightest hint that may help you. But also act without delay as you have restricted time to leave the bedroom. Will you manage it?