Brother Unknown

Watch Brother Unknown

  • NR
  • 2026
  • 1 hr 35 min

After her grandmother's death, Katie isolates herself-until she finds Mark, a charming half-brother who offers the family she's been missing. But soon, Katie's instincts tell her something is wrong.

Brother Unknown is a 2026 horror movie with a runtime of 1 hour and 35 minutes.

Own from $9.99
Rent from $3.99 / Own from $7.99
Description
Where to Watch Brother Unknown
Brother Unknown is available to watch, stream, download and buy on demand at Prime Video and Fandango at Home. Some platforms allow you to rent Brother Unknown for a limited time or purchase the movie and download it to your device.
  • Genres
    Horror Suspense
  • Cast
    Adam Foster Ballard
    Duke Van Patten
    Olivia Rand
  • Director
    Jacob Arbittier
  • Release Date
    2026
  • MPAA Rating
    NR
  • Runtime
    1 hr 35 min
  • Language
    English
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