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Leo Argyll is the main antagonist of BBC's 2018 miniseries adaptation of Ordeal by Innocence, based on the novel of the same name by Agatha Christie. He is based on Leo Argyle from the original novel, being the husband of Rachell Argyll and father of Tina, Micky, Hester and Jack Argyll, and the adptation's real murderer.

He was portrayed by Bill Nighy, who also played Viktor in the Underworld film series, Davy Jones in the Pirates of the Caribbean film series, Whitey in Flushed Away, Rattlesnake Jake in Rango, General Fallon in Jack the Giant Slayer, The Network in The World's End, Prince Naberius in I, Frankenstein and Howard Clifford in Pokémon: Detective Pikachu.


In the original story and other adaptations (including Agatha Christie's Marple), Leo is a calm and reasonable man and a supporting character, but here, he is the real murderer behind the death of Rachel Argyll, his wife.

He was also Jack's biological father through an affair with a then-teenage Kirsten Lindholm (possibly less than willing on her part); when Jack proclaimed his intention to tell all on the stand, Leo conspired with Bellamy Gould for Jack to be murdered in prison.

In order to cover up his further crimes, Leo later murders Phillip Durrant and has Arthur Calary involuntarily committed. However, his crime was later revealed by Kirsten and his children who stood against him. Leo was imprisoned by Rachel underneath his manor, while the Argyle children convinced the police that their father committed suicide.


  • During his portrayl of Leo, Bill Nighy always looks like he is holding a pen in his hand because he is affected by Dupuytren's Contracture, a degenerative muscular condition which can cause the ring and little fingers to become permanently folded in towards the palm. It normally affects males over 50.
  • Leo's sexual relationship with Kirsten Lindholm was created in the show. Moreover, in the original novel, Jacko is his adoptive son instead of his own son.


Agatha Christie's signature.png Villains
(Non-Poirot & Non-Marple)

Tommy and Tuppence Beresford
Conspiracy (Mr. Brown, Mr. Brown's decoy & Mr. Whittington) | Elise | Sir Phillip Stark | Mrs. Lancaster | Miss Bligh | N & M

And Then There Were None
Anthony James Marston | Mrs. Ethel Rogers | General John Gordon Macarthur | Mr. Thomas Rogers | Emily Caroline Brent | Justice Lawrence John Wargrave | Dr. Edward George Armstrong | William Henry Blore | Philip Lombard | Vera Elizabeth Claythorne | Isaac Morris | Edward Seton

Other Mystery Stories
The Wife of the Kenite (1923): Conrad Schaefer
The Red Signal (1924): Jack Trent
The Mystery of the Blue Jar (1924): Ambrose Lavington | Felise Marchaud
The Man in the Brown Suit (1924): Sir Eustace Pedler
The Witness for the Prosecution (1925): Leonard Vole | Romaine Vole
The Fourth Man (1925): Annette Ravel
S.O.S. (1926): Mr. Dinsmead
Wireless (1926): Charles Ridgeway
The Last Séance (1927): Madame Exe
The Sittaford Mystery (1931): Major Burnaby
The Hound of Death (1933): Dr. Rose
The Strange Case of Arthur Carmichael (1933): Lady Carmichael
Philomel Cottage (1934): Charles Lemaitre
Why Didn't They Ask Evans? (1934): Roger Bassington-ffrench | Moira Nicholson
Murder is Easy (1939): Honoria Waynflete
Death Comes as the End (1944): Yahmose | Nofret | Satipy | Sobek | Ipy | Henet
Towards Zero (1944): Nevile Strange
Sparkling Cyanide (1945): Ruth Lessing
Crooked House (1949): Josephine Leonides
The Mousetrap (1952): TOP SECRET | Maureen Lyon | Mrs. Boyle
Destination Unknown (1954): Thomas Betterton
Ordeal by Innocence (1958): Jacko Argyle | Kirsten Lindholm | Rachel Argyle
The Pale Horse (1961): Zachariah Osborne
Endless Night (1967): Michael Rogers | Greta Andersen

Adaptational, Homage & Non-Canonical
Ordeal by Innocence (2018): Bellamy Gould | Leo Argyll
Knives Out (2019): Ransom Drysdale
Other Adaptations: Leonard Waynflete

See Also
Hercule Poirot Villains | Miss Marple Villains