Judge Martin Shepley

Judge Martin Shepley presides over the courtroom at the center of The Undoing's murder trial. He appears as the figure of institutional order amid the media frenzy and family unraveling swirling around the case, keeping the proceedings on track with brisk, no-nonsense authority.

In a series consumed by wealth, guilt, and performance, a judge who simply enforces procedure offers a useful counterweight. Clint Jung plays him with dry composure, a small but steadying presence whose impatience with theatrics quietly underscores just how much spectacle everyone else is bringing into his courtroom.