Babylon 5: The Lost Tales - Voices in the Dark

This two-part Babylon 5 installment follows a malevolent entity that has possessed a worker. Colonel Lochley blocks a priest from performing an exorcism, and the host is returned to Earth. In the second part, Galen schemes to dupe President Sheridan into assassinating the future Centauri emperor to prevent an Earth attack projected roughly thirty years from now.