Have seen many mysteries be solved on here so hoping someone can help me out
Not sure if it's a film or a series. The only scene I remember is a person sorting through someones belongings (I believe it's his dads) and he finds a watch. He throws the watch which breaks. When he picks it up again, there's some kind of code/clue on the back and he ends up being able to use the watch face to unlock something - a door or a tunnel or something like that
Sorry that this is a really really bad description but it's really annoying me! I've tried Googling all sorts and can't find any clues