About Star Trek: The Next Generation Season 4, Episode 21 : The Drumhead

When an explosion damages the Enterprise's warp engine, a retired Starfleet admiral boards the ship and begins an investigation that ultimately leads her to suspect Captain Picard of participating in a treasonous conspiracy. Guest Stars: Robert Ito, Bruce French, Earl Billings, Henry Woronicz, Jean Simmons, Spencer Garrett, Ann Shea,