The Lone Wolf in London

A charming, seemingly reformed jewel thief who insists he had nothing to do with the Eyes of the Nile theft. He moves with wit and poise, using careful planning to navigate suspicion and pursue clues that may clear him or reveal a deeper conspiracy. His loyalty to Jamison and his own self-interest drive much of the plot.

Lanyard's loyal, perceptive butler who provides steady control of the household and relays crucial information. He pieces together Iris's machinations and moves the plot forward with practical observations. His devotion and discreet demeanor anchor the story's domestic side.

A former starlet who masterminds the caper, using charm and ruthlessness to manipulate those around her. She plays a double game, presenting herself as avoiding trouble while secretly orchestrating the theft. Ultimately she is revealed as the thief and the killer behind the scheme.

Daughter of a wealthy gem collector, she is drawn into the loan arrangement and the diamond plot through her family's finances and social circle. Her engagement to David Woolerton adds emotional and financial stakes to the drama. She moves between involvement and concern as events unfold.

A suave financier who finances Iris's lavish life and stage career, and who has past romantic ties with Iris. He becomes a rival to Lanyard in the race to secure the diamonds, using wealth and influence to influence others. His motives are murky, veering between affection and self-preservation.

A Kelmscott household maid who acts as an informant, relaying gossip and key details to Jamison. Her glimpses into Robards's heartbreak and the household dynamics help move the plot forward. She underscores the web of relationships that criminals exploit.

Ann's fiancé who suspects Lanyard and seeks information, spurring him to spy on the thief. His involvement reflects the personal stakes of the diamond plot and the tension within the love triangle. He acts as a catalyst that accelerates the investigation and the reveal.

A Scotland Yard inspector pursuing Lanyard and the Eyes of the Nile theft. He follows leads, pieces together clues, and confronts Iris as the truth emerges. His persistence heightens the tension between law and crime and frames the final confrontation.