The Girl on the Pier

Nick reveals Joe's alias as Harper to gain leverage over him. Both men are criminals with shared history from a robbery four years earlier, but Nick wants to use the information to blackmail Joe. By exposing Joe's criminal past, Nick positions himself to control the situation and demand money, not realizing this will push Joe toward murder.

Earlier, Nick greets Joe as an old friend and presses him about missing loot, hinting at their criminal connection.

Joe kills Nick after discovering his affair with Rita and being threatened with blackmail. When Nick kisses Rita at the dance and then threatens to expose Joe as Harper, Joe realizes Nick is a dangerous liability. He empties his safe, takes a revolver, and waits in the Wax House disguised as a clown to ambush and shoot Nick.

Joe's preparation scene where he empties the safe and retrieves the revolver foreshadows the murder.

Charlie misinterprets a confrontation scene on the beach where Joe confronts Nick and Rita. In the dim lighting and chaos of the argument, Charlie believes he witnesses Joe kill Rita. However, Rita actually leaves alive and continues her affair. This misperception drives Charlie's determination to uncover what he thinks is a murder plot.

The tense confrontation at the dance between Joe, Nick, and Rita creates the confusing scene Charlie witnesses.

The missing loot refers to money from a robbery committed four years earlier when both men used aliases. Nick implies Joe kept all the proceeds from their criminal partnership, demanding his share. This stolen money represents the financial motive driving their conflict and explains why Joe is desperate to keep his criminal past hidden.

Nick greets Joe as an old friend and asks about the missing loot, establishing their criminal relationship early.

Rita defies Joe's demands because she has grown to despise her husband and wants out of their marriage. She shows cold contempt when Joe pleads with her to end the affair, using Nick as an escape from her unhappy marriage. Her continued relationship with Nick is both emotional rebellion and a way to force Joe's hand.

Rita's cold response when Joe asks her to take a night out to save their marriage establishes her hostility.

Joe hides inside a waxwork display disguised as a clown, standing motionless among the other figures in his Wax House. The Wax House features a Chamber of Horrors section filled with lifelike wax statues, allowing Joe to blend in with the exhibits. When police arrive searching for him, his disguise initially works until Charlie notices him breathing or moving.

The earlier scenes in the Chamber of Horrors establish the wax figures as realistic enough to be mistaken for real people.

In the library, Charlie, Cathy, and Ronnie find newspaper cuttings linking Nick Lane to the robberies committed under the alias Harper four years earlier. This reveals Nick is also a criminal who participated in the same crimes as Joe. The children realize Nick's true motive is not romance but manipulating Joe using their shared criminal history.

Nick's knowledge of Joe's alias and the missing loot hints at his own criminal background from the start.

Joe drowns during the final chase when he flees across Brighton Pier toward the sea. After Charlie spots him among the wax figures, police pursue Joe along the pier. Cornered and unable to escape, Joe makes a desperate leap into the water but cannot swim to safety or is overwhelmed by the tide, leading to his death.

The pursuit scene builds as Joe runs out of options, with the sea representing his final escape route.

Inspector Chubb tries to prevent his children from interfering by posting officers on the pier and warning Ronnie not to return. However, Charlie is persistent and slips away despite his mother's attempts to pull him back. The Inspector's official duties conflict with his parental control, and the children ultimately stumble onto key evidence before he can fully contain the situation.

The Inspector's warning to Ronnie establishes he is trying to keep the children away from danger.

Charlie suspects murder because he overhears Nick and Joe discussing the missing loot and Joe's alias Harper in the Wax House office. From the Chamber of Horrors, he catches enough of the conversation to understand danger is imminent. Combined with the confrontation at the dance and the newspaper research linking both men to past crimes, Charlie pieces together that someone will die.

Charlie's eavesdropping in the Chamber of Horrors provides the initial clue about Joe's criminal identity.