 Before turning to acting , Behan had a brief career in journalism in Ireland : " I interviewed everyone from priests to prostitutes before my Dublin paper folded . " Behan was also involved in theatre work – he was a costume assistant during the original production of Tom Murphy 's adaptation of Liam O 'Flaherty 's 1925 novel The Informer on 13 October 1981 at the Olympia Theatre in Dublin . He participated in various other plays in Dublin , but finding them " all very over the top , very amateurish , full of people turning up drunk or not turning up at all " , he decided to leave Ireland and pursue art studies in Berlin . 
