ST. PAUL, MNConcordia University campus police are still investigating Tuesday's theft of a poster of Edvard Munch's The Scream from an area dorm room. 'We're doing everything in our power to recover the poster,' officer Donald Benson said of the poster, which was stolen while the two residents of 204 Walther Hall were studying in the second-floor common area. 'With its iconic contorted human figure beneath a swirling red sky, The Scream is a masterpiece of German expressionism, and the poster was valued at $7.95.' The work of art is one of only 86 copies known to exist on the campus. 