This tightly written, well-directed and perfectly acted 81-minute vignette is as engaging and astonishing as any four-character, dialogue-driven film could ever be.

This witty and caustic film may be confined in terms of setting and scope (it unfolds in real time) but it's fun nonetheless, not least because of the delicious performances from the four actors.

Cesc Gay's script is a wonderful string of sparkling dialogues, twists, and confrontations, both between characters and themselves...One of the best movies I've seen so far this year.

Gay smartly keeps it short and sharp - just 82 minutes including credits - while a hugely talented cast keep things sparking from start to finish.