The Voice of Merrill

Alycia poisons Roche because she wants to be free from her loveless marriage and be with her lover Hugh Allen. She plants the poison in his medication, hoping his death will appear as natural causes from his heart condition, thus clearing herself and Allen of suspicion while allowing them to continue their affair without consequence.

Earlier, Alycia expresses her exhaustion with the marriage and begins the affair, establishing her motivation to escape.

The Voice of Merrill is an anonymous radio play written by Jonathan Roche that Hugh Allen narrates. The work is significant because Alycia orchestrates a deception to pass it off as Allen's own creation, hoping to boost his struggling writing career. More importantly, Roche discovers Allen is the real author and uses the final episodes to embed clues that reveal the blackmailer's killer, turning the broadcast into a weapon for posthumous revenge.

Roche insists on presenting the work anonymously, hinting at a deeper purpose beyond simple literary secrecy.

After learning that Hugh Allen is the anonymous author behind The Voice of Merrill, Roche becomes enraged that Allen is taking credit for work Roche created. Before dying from the poison, Roche arranges for the final episodes of the radio play to contain narrative clues that mirror the real murder investigation and point toward the blackmailer's true killer. This way, the broadcast serves as a trap to expose Allen even after Roche's death.

Roche's refusal to publicly deny Allen's authorship, despite his knowledge of the truth, hints at a hidden agenda.

During the final broadcast, the storyline of The Voice of Merrill parallels the real events of the murder investigation, embedding clues that point directly to the blackmailer's killer. Inspector Thornton recognizes these parallels and uses them to deduce the killer's identity, leading to the resolution of the case.

Thornton notes early on that the storyline mirrors real events, suggesting the broadcast holds investigative significance.

Based on the broadcast revelation that mirrors the real murder investigation, Inspector Thornton identifies the killer through the narrative clues embedded in the final episode of The Voice of Merrill. The radio play's storyline provides the critical evidence that connects the killer to the crime.

The investigation focuses on three men with motives, and Thornton's surveillance aims to catch whoever betrays guilt through their actions.

Alycia carefully poisons Roche with his own heart medication, calculating that the existing medical condition would cause the death to appear natural. The autopsy initially concludes Roche died of natural causes related to his heart condition, which is exactly what Alycia intended. However, Thornton's suspicion remains, and he mentions an autopsy will be performed, creating tension about whether the poisoning will be discovered.

Alycia specifically uses his own medication, ensuring the method aligns with his known health issue.

Each man had a clear motive: Hugh Allen was the blackmailer's lover and may have wanted to silence her; Ronald Parker was her former employer whom she had blackmailed for thousands of pounds; and Jonathan Roche knew her but refused to explain the nature of their acquaintance. With no solid alibis for the time of the murder, Inspector Thornton places all three under surveillance to determine which one acted on their motive.

The three suspects are introduced immediately after the body is found, establishing them as the central puzzle of the investigation.

Alycia helps Allen because she is having an affair with him and wants to escape her loveless marriage to Roche. She sees his success as part of their future together, and by passing off The Voice of Merrill as his work, she believes she can give him the literary career he needs to become a suitable partner and enable them to live freely after Roche's death.

The affair begins shortly after Alycia grows weary of her marriage, establishing her personal stake in Allen's future.

Inspector Thornton decides to shadow the three suspects, Hugh Allen, Ronald Parker, and Jonathan Roche, believing that the guilty party will eventually reveal themselves through their actions and behavior. He watches their movements, scrutinizes their alibis for inconsistencies, and looks for slips that might expose the killer. His strategy relies on patience and observation rather than immediate interrogation.

Thornton explicitly states he will wait for the culprit to betray themselves through action.