Cert 18 89mins Stars 4

A first day at a new job turns out to be a really bad day at the office in this fierce and funny action thriller.

A blood soaked satire on corporate downsizing full of gleeful gore, it deserves to put to the top of your cinema-going in-tray.

Melonie Diaz stars as Dany Wilkins, a US citizen newly employed by recruitment firm, Belko. They’re based in an isolated office block on the outskirts of Bogota, Colombia.

With no warning, the building is sealed by armed guards and the 80 US staff are told by the tannoy announcer they must kill each other in order to survive.

Shock quickly turns to violence as the rationalisation of the workforce begins.

It’s written by James Gunn, the director of upcoming Marvel’s sci-fi romp, Guardians of the Galaxy: Volume 2. He sketches the characters with efficiency, and expertly keeps us guessing who will dodge the bullet and who gets the chop.