Hanna’s teen assassin Saoirse Ronan is a busy actress at the moment. The 17-year-old is headlining both the adaptation of Twilight novelist Stephenie Meyer’s The Host and Neil Jordan’s trip back to vampiredom, Byzantium.

Variety is reporting that she’s also signed on to star in fantasy wartime drama, How I Live Now. She’ll play the lead yet again, this time in the role of a young American girl on holiday in the UK who is caught up in a terrorist attack during World War III and separated from her family, whom she struggles to be reunited with.

Based on the award-winning young adult novel by Meg Rosoff, Kevin MacDonald has signed on to direct, with Jeremy Brock (his co-scribe on The Last King of Scotland) and Terry Gilliam-regular Tony Grisoni providing the script.