Charlie Chan in Rio

Renowned detective Charlie Chan leads the Rio investigation, calmly dismantling red herrings and connecting disparate clues. He keeps suspects in the house to prevent escape and uses sharp logic to reveal the truth. Chan’s disciplined approach contrasts with the drama around Lola and Cardozo, guiding the story toward resolution.

A glamorous singer whose engagement to Carlos fuels the intrigue, Lola becomes the focal point of the murder investigation. She confesses under hypnosis to killing Manuel Cardozo, but the truth remains contested as the case unfolds. Her death further complicates motives and deepens the mystery surrounding the circle of guests.

A Hindu psychic who appears to influence Lola’s fate, Cardozo is revealed to be the brother of Lola's victim. He is the architect of much of the staged semi-conscious sessions and the broader deception shaping the investigation. His role as the antagonist drives the tension until Chan exposes the truth.

Lola's personal assistant who ultimately turns out to be the killer, Helen is motivated by jealousy and a desire to shield her husband’s memory from exposure. She is Lola’s rival who uses manipulation to control outcomes and kills to prevent elopement. Helen’s confession pivots the case toward a domestic treachery reveal.

Rio’s police chief who coordinates with Chan and maintains order as the investigation unfolds. He oversees the gathering of suspects in the house and contributes to the procedural atmosphere of the film. Souto’s authority helps keep the investigation focused and controlled.

Charlie Chan’s perceptive son, Jimmy aids in the investigation and uncovers details others miss. His curiosity and quick observations help tie the jewelry stash to the crime and point toward the true culprit. Jimmy's energy adds a lively dynamic to the detective duo.

Lola’s loyal butler who harbors important information about the jewels and the night’s events. He becomes a target as secrets surface, and his later shooting during the blackout underscores the danger of being caught in the crossfire of the investigation.

Lola’s maid who witnesses conversations and holds clues that could crack the case. Her observant role within Lola’s circle helps Chan narrow down suspects and piece together the motive behind the murder. Lili’s presence adds a crucial witness perspective to the social dynamic.

Lola’s former husband who hints at a complicated past with Lola, contributing to the pool of potential motives. His relationships and stability are questioned as the investigation tightens around the guest list. Wagner’s presence amplifies the themes of love, separation, and possible vengeance.