Mary Tamm graduated from RADA, and made her television debut in the series The Donati Conspracy. Her early television credits include Coronation Street, Public Eye and Return Of The Saint, and on film she appeared in The Likely Lads and The Odessa File, before being cast as the icy Time Lady companion Romana, opposite Tom Baker, in Doctor Who. Since leaving the show Tamm's career has continued to flourish on stage and screen, encompassing such productions as Bergerac, Agatha Christie: Poirot, Heartbeat, Holby City, Jonathan ... In the heart of post-war London, a bomb is discovered lodged at a disused station between Green Park and Hyde Park Corner. The bomb detonates, and as the dust clears, it becomes apparent that something has been awakened. Strange half-human creatures attack the workers at the site, hungrily searching for anything containing sugar… Meanwhile, Honoré and Emily are contacted by eccentric poet Randolph Crest, who believes himself to be the target of these subterranean creatures. The ensuing investigation brings Honoré and Emily up against a terrifying force from deep beneath the earth, and one which even with their combined powers, they may have trouble stopping. Part mystery, part detective story, part dark fantasy, part science fiction ... original adventures in time and space.