Residual is built on a single constraint that is also its greatest creative asset: compression. One room. Two characters. Twelve minutes. No exposition, no score telling the audience what to feel. All emotion lives in the face.

​

The sci-fi premise operates as a lens rather than a subject. The Relay is never explained. Its mechanics remain deliberately ambiguous — whether the memory transfer is a neurological fact or a metaphor both women have agreed to believe in is left open. That ambiguity is the film.

​

The closest reference points are Bergman's Persona — two women in a confined space whose identities bleed into each other — and the work of Brandon Cronenberg, whose horror is intimate, quiet, and unwilling to resolve cleanly.