befriends Mrs. Verloc and her little brother, Stevie (Desmond Tester), who lives with them, by treating them to a meal at Simpson's. At this point, Spencer and Scotland Yard are unsure whether Mrs. Verloc is complicit in the terrorist plots or innocently unaware; but by the end of the meal, he is convinced she is innocent and is falling for her. Verloc goes to the bird shop. The bomb-maker says he will prepare a time bomb and set it to explode at 1:45 p.m. on Saturday. Later that night, members of the terrorist group meet in Verloc's living room above the cinema. Detective Spencer attempts to eavesdrop on the conversation, but is seen and recognized. The meeting ends abruptly and the members scatter, worried that they are all being followed. Verloc tells his wife the police are investigating him, but maintains his innocence. The next day, Verloc receives a package containing two caged canaries – a present for Stevie – and the bomb. Spencer shows up with Stevie and tells Mrs. Verloc of Scotland Yard's suspicions. Verloc sees them talking, and becomes nervous. Before he can be questioned, Verloc asks Stevie to deliver a film canister to another cinema, and since it is on his way, to deposit another package in the cloakroom at Piccadilly Circus station by 1:30 p.m. He says it contains projector parts to be repaired and the repairman will collect it there. Unknowingly carrying the time bomb for Verloc, Stevie is delayed by several events, including the Lord Mayor's Show procession. Now late, Stevie manages to talk himself aboard a bus to Piccadilly Circus, even though flammable nitrate film is not allowed on public vehicles. The bomb explodes on the bus, killing Stevie and others. Verloc confesses to his wife, but blames Scotland Yard and Spencer for Stevie's death, since they were the ones who prevented Verloc from delivering the bomb himself. Soon afterwards, as they are preparing to eat dinner, she becomes infuriated and stabs him to death with a knife. When Spencer arrives to arrest Verloc he realises what has happened, but he insists that she should not admit stabbing her husband. Even if it was self-defense, she might not be believed in court. Spencer plans to abandon his career and leave the country with her. The bomb-maker goes to Verloc's flat to retrieve the birdcage in case it might incriminate him, but the