A nuclear icebreaker, foundering in Arctic waters. Seabirds washed up in the fishing resort of Ambermouth, their wings encrusted with crystals. A shining artefact of uncertain provenance, up for sale on an auction site. All of these things are linked, as the Doctor, Nyssa, Tegan and Turlough are about to discover.
This book is part of the Doctor Who: Big Finish Monthly Adventures Audio Books series.