Mr Verloc leads a double life: he works in a shop with his wife, and her mentally disabled brother, and he is also a member of a communist anarchist group, and a secret agent for the Embassy of an unmentioned country. The embassy wants him to bomb the Greenwich Observatory.
On the day of the bombing, his wife's brother wanted to come with him for his walk. Mr Verloc told him to stay away, but the brother followed him. The bombing was not very succesful, and his brother in law was blown up by the bomb as well. The police found out who was involved in the bombing, and Mr Verloc's wife finds out that her brother was killed because of her husband's actions. She takes a knife and kills her husband. After this she kills herself by jumping off a steamer.