Following a deadly political shooting, police conduct citywide interrogations. A clockmaker is questioned about his whereabouts and provides an alibi, but his wife expresses fear about London's safety and criticizes the police. After the officer leaves, a man at the scene warns the watchmaker that he is a prime suspect simply because he lacks a solid alibi. The wife insists she will always look out for him, leaving him vulnerable and under suspicion in the eyes of the authorities.