It's fair to say that it's business as usual in the troubled life of Carrie Mathison in the intense full-length trailer for Homeland season five.

The latest run of the US drama will pick up two years after Carrie Mathison’s (Claire Danes) ill-fated tenure as Islamabad station chief.

Struggling to reconcile her guilt and disillusionment with years of working on the front lines in the 'war on terror,' she finds herself in a self-imposed exile in Berlin, estranged from the CIA and working as the head of security for a German philanthropist.

Homeland returns to RTÉ2 in the autumn.