Daniel Radcliffe is going undercover to take down a radical right-wing terrorist group, in the first trailer from upcoming thriller, Imperium.

Inspired by real events, the plot revolves around Nate Foster, a  young, idealistic FBI agent, who investigates the dangerous underworld of white supremacy.

The British-Jewish actor is joined by Toni Collette in this feature film debut from director Daniel Ragussis.

Michael German, the real-life agent on whom the film is based, collaborated on the script.

Imperium is released in UK cinemas on September 23.