A leading team of analysts buried in the heart of GCHQ, secretly works to ward off a series of cyber-attacks on the UK in the run-up to a general election. When a routine stress test of internet infrastructure goes awry, 21-year-old GCHQ intern Saara Parvin suddenly finds herself operating on the invisible frontier of high-stakes cyber warfare. In a thrilling cat-and-mouse game, Saara and the team at GCHQ must try to stay one step ahead and anticipate their opponents' every hidden move.

Starring:

Maisie Richardson-Sellers, Adrian Lester, Mark Rylance, Hannah Khalique-Brown

Genre:

Drama, Thriller