Rob Drummond's complex but gripping psycho-thriller about truth and perspective stirs memories of 1980s television quiz shows.
Jonathan Watson, a star of light-entertainment in Scotland, re-creates the assured blandness of the era's hosts as ringleader Daniel Caplin; Eileen Walsh is outstanding as Sandra, a newcomer to a game called False!.
The first third plays as a game-show pastiche, but a twist comes with an act of bravura violence, after which Hamish Pirie's bold but sensitive direction follows Drummond's breakneck story into a siege of the studio and then a slow dismantling of Sandra's world. The threads snap into sharp relief with breath-taking effect.
(0131 228 1404) to 20 April