Offscreen
QUALITY OF FICTIONAL EVENTS WHICH ARE NOT SEEN, BUT MERELY HEARD BY THE AUDIENCE OR DESCRIBED OR IMPLIED
Offstage; Off-screen; Off stage
The terms offscreen, off camera, and offstage refer to fictional events in theatre, television, or film which are not seen on stage or in frame, but are merely heard by the audience, or described (or implied) by the characters or narrator. Offscreen action often leaves much to the audience's imagination.