The Diabolical poster
Where to stream

The Diabolical

5.020151h 26mMovieHorrorScience FictionThriller

When a single mother and her two young children are tormented by an increasingly strange and intense presence in their quiet suburban home, she turns to her scientist boyfriend to take on the violent forces that paranormal experts are too frightened to face.

DirectorAlistair Legrand
WritersAlistair Legrand·Luke Harvis

Where to watch

PlexPlex
Availability shown for Canada · rights vary by country

Cast · Directed by Alistair Legrand

ALAli Larter
Ali Larter
Madison
AGArjun Gupta
Arjun Gupta
Nikolai
CPChloe Perrin
Chloe Perrin
Haley
JEJoe Egender
Joe Egender
Carl
PFPatrick Fischler
Patrick Fischler
Austin
WCWilmer Calderon
Wilmer Calderon
Miguel
TWTom Wright
Tom Wright
Curtis (as Thomas Wright)
MDMerrin Dungey
Merrin Dungey
Mrs. Wallace
MR
Max Rose
Jacob
KCKurt Carley
Kurt Carley
The Prisoner
LMLaura Margolis
Laura Margolis
Marcy
MSMark Steger
Mark Steger
Dr. Herbert

More from Ali Larter · Lead actress

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See all fromAli Larter

More from Arjun Gupta · Co-star actor

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Limitless
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See all fromArjun Gupta

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The Diabolical — streaming FAQ

Which OTT platform streams The Diabolical?

The Diabolical is streaming on Plex in Canada. It's not currently on Netflix.

Is The Diabolical on Netflix?

No, The Diabolical is not on Netflix in Canada as of October 2026. It's currently on Plex.

Is The Diabolical on Amazon Prime Video?

No, The Diabolical isn't on Amazon Prime Video in Canada right now. It's on Plex instead.

Where can I watch The Diabolical for free?

The Diabolical is available to stream free (with ads) on Plex in Canada.