Movie availability guide
Diary of a Madman
“The most terrifying motion picture ever!”
Simon Cordier, a French magistrate and amateur sculptor comes into contact with a malevolent entity. The invisible - yet corporeal - being, called a "horla" is capable of limited psychokinesis and complete mind control.
1963 6.1/10 community score 1h 36m Released
- Horror
Viewing market
Country-level availability
Where to watch in United States
8 platforms currently listed across all viewing options
Data checked 21 Oct 2026, 01:08 UTC
Included with subscription
7Linked platform guidefuboTVPlatform guideView details Streaming providerMGM+ Amazon ChannelNo linked platform guide yetDetails unavailable Streaming providerPhiloNo linked platform guide yetDetails unavailable Streaming providerMGM Plus Roku Premium ChannelNo linked platform guide yetDetails unavailable Streaming providerMGM PlusNo linked platform guide yetDetails unavailable Streaming providerScreenPix Apple TV channelNo linked platform guide yetDetails unavailable Streaming providerScreenPix Amazon ChannelNo linked platform guide yetDetails unavailable
Free with ads
1Linked platform guideTubi TVRelated brand guideView details
Reader conversation
Community discussion
Share viewing experiences, useful context or corrections. Comments are hosted by Disqus and load only after you choose to open them.