What would you do if the same day kept starting over and you could only half remember the last time? Infinitum: Subject Unknown, a 2021 British science-fiction feature from director Matthew Butler-Hart, puts that question to a woman named Jane and follows her attempts to answer it.
What is Infinitum: Subject Unknown about?
Jane opens her eyes in an attic she does not recognise. The building is unfamiliar, the world outside it stranger still, and there is no obvious way to leave. Soon she realises that time itself is the trap: the day resets, she wakes in the same attic, and most of what she learned has slipped away. Only fragments survive each reset, but those fragments accumulate. Names begin to surface, chief among them a Professor Aaron Ostergaard, and the trail leads towards the Wytness Quantum Research Centre, overseen by Charles Marland-White. Whether Jane can reach it, and whether anything there can explain what has happened to her, drives a chase against a clock that refuses to move forward.
About the cast
Tori Butler-Hart heads the cast, with Conleth Hill and Ian McKellen the most widely recognised names alongside her. Wendy Muir Hart, Christopher Hart, Matthew Butler-Hart, Holly Dale Spencer and Ben Lee complete the credited ensemble. The catalogue does not spell out which performer takes which role, and this page keeps to the same discipline. The director also appears in front of the camera, and the shared surnames across the credits point to a small, close-knit production.
Context & significance
Time-loop stories have become a genre of their own, and Infinitum: Subject Unknown approaches the idea from a low-budget, single-protagonist angle rather than a spectacle-driven one. Its setting is a parallel world reached without explanation, its stakes are personal, and its structure is built on repetition: each reset lets Jane, and the audience, know a little more than before. A quantum research centre and a professor at the heart of the mystery tilt the film towards the scientific end of the genre, where the answer is expected to be a mechanism rather than a miracle. Made in the United Kingdom and released in 2021, it is catalogued on K-Time under science fiction alone.
Watching Infinitum: Subject Unknown on Ktime
K-Time streams Infinitum: Subject Unknown in English; there is currently no Persian dub or subtitle track listed for it. This page is free to read, and playback requires only a K-Time account login. At under ninety minutes it is a manageable evening watch, and the Farsi interface makes it easy to save to a watchlist.