Signal One is a 2026 science fiction film written and directed by Jonathan Sobol. It stars Isabelle Fuhrman, Dennis Quaid, David Thewlis, Josh Hutcherson, Kiera Allen, and Raoul Bhaneja.
Contents
Plot
Dr. Annika Kask, a brilliant computer scientist known for groundbreaking work in astrophysics, is recruited by a tech billionaire to join a secret research project on a private Caribbean island. The project centers on a device called LITTLEMOUTH, created by eccentric physicist Perry Glassner, which is designed to communicate with extraterrestrial intelligence.
As the team begins receiving and transmitting signals beyond Earth, they realize they may have achieved humanity's first contact with an alien civilization. What starts as a scientific breakthrough gradually becomes a crisis as the incoming communication appears to have profound and potentially dangerous effects on the researchers and the facility itself. Questions emerge about whether the intelligence is friendly, hostile, or simply beyond human understanding.
Cast
Isabelle Fuhrman as Annika Kask
Dennis Quaid as Sam Houston
David Thewlis as Perry Glassner
Josh Hutcherson as Charlie Kaminsky
Raoul Bhaneja as Agent Sparrow
Stephen Adekolu as Solomon
Production
In June 2022, it was revealed that Jonathan Sobol had written and directed a science fiction film titled Littlemouth. By March 2026, the film had been retitled to Signal One, and that Radial Entertainment and Shout! Studios had acquired the distribution rights. Isabelle Fuhrman, Dennis Quaid, David Thewlis, Josh Hutcherson, Kiera Allen, and Raoul Bhaneja rounded out the cast.
Release
Signal One was released on video on demand on June 5, 2026.
















