Characters in Murder in Three Acts

Hercule Poirot

The Belgian detective is present at the first death but stays largely in the background, letting the amateurs investigate before stepping centre stage in the final act.

Also in The Chocolate Box, The Kidnapped Prime Minister: a Hercule Poirot Short Story #2, The Lemesurier Inheritance, The Affair at the Victory Ball, The Disappearance of Mr. Davenheim, The Plymouth Express: a Hercule Poirot Short Story, The Adventure of the Cheap Flat: a Hercule Poirot Short Story, The Submarine Plans: a Hercule Poirot Short Story, The Adventure of the Clapham Cook: a Hercule Poirot Short Story, The Cornish Mystery: a Hercule Poirot Short Story

Mr Satterthwaite

An elderly, perceptive observer of human nature who serves as the chief amateur sleuth for much of the book; the only character to partner Poirot here after his Harley Quin stories.

Also in Murder in the Mews and Other Stories (Dead Man's Mirror / Incredible Theft / Murder in the Mews / Triangle at Rhodes), Problem at Pollensa Bay, The harlequin tea set and other stories

Hermione "Egg" Lytton Gore

A spirited, headstrong young woman who throws herself into the investigation, her attachment to Sir Charles colouring her involvement.

Sir Charles Cartwright

A retired actor hosting the dinner party where the first death occurs.

Lady Mary Lytton Gore

Captain Dacres

Cynthia Dacres

Angela Sutcliffe

Mrs Babbington

Muriel Wills

Margaret De Rushbridger

Violet Milray

John Ellis

Oliver Manders

Ellen Terry (Three Act Tragedy)

Dr. MacDougal

Aristide Duval

Sir Jocelyn Campbell

Miss Temple (Three Act Tragedy)

Superintendent Crossfield

Doris Sims

Reverend Stephen Babbington

The gentle, well-liked local vicar whose sudden death at the cocktail party opens the case and baffles everyone by its lack of motive.

Sir Bartholomew Strange

A respected Harley Street nerve specialist and friend of Sir Charles whose later death, in similar circumstances, transforms the inquiry.