At its heart RADIX is a series about two Tunisian sisters whose paths collide on either side of a deadly Islamist plot against the Vatican. From the Jasmine Revolution, through the humanitarian chaos of Libya, to the quaint tourist town of Otranto and on towards Rome, the plot sucks in intelligence agencies, Far-Right leaders and returning terrorists from the collapsed Islamic State.

But underpinning this plot is a backstory of guilt; after persuading a reluctant Neda to join her on a peaceful daytime protest during the Jasmine Revolution, Neda and Amal are both arrested. Neda is chosen by a drunk officer and raped, while Amal is spared. If it had been the other way around, would Amal have ended up the same? The question haunts Amal and the survivor’s guilt drives her to rescue her sister from her radicalised path.

This is the narrative dynamo which propels the series into subsequent seasons when Amal persuades Neda to infiltrate the far-right firstly in Belgium (Season 2) and then in Paris (Season 3). Together they discover that Russia’s interference is being eclipsed by a far more dangerous home-grown terror; an ultranationalist alliance which has outgrown its Russian sponsors, and with a groundswell of popular support, uses the migrant crisis to legitimize its white supremacist ideology.