ICM has signed Peter Mullan, writer-director of “The Magdalene Sisters.”The sobering drama about abuses in an Irish convent sparked controversy when it debuted at the Venice Film Festival and drew an outcry from the Catholic Church. The film was acquired for distribution by Miramax. The Scottish-born Mullan, who made his feature debut with “Orphans,” recently turned his attention to directing after first making his way as an actor. He has been seen onscreen in such films as “Braveheart,” “Shallow Grave” and “Trainspotting,” and he won acting honors at Cannes in 1998 for starring in the Ken Loach-directed “My Name Is Joe.” Several agencies pursued him since Venice, and ICM is his first Hollywood-based agency. Mullan continues to be managed out of London by Pauline Asper.