From the writer of Tracks and Broken Colours, a gripping new drama about the collision of medicine and something infinitely stranger

When Dr Anna Diaz moves from an urban practice in Cardiff to take on a new job in Bly, a remote village in rural Wales, she finds a community reeling from the unexpected death of their last GP and a startling number of curious rare medical conditions. Among them, a young woman who has become so hairy she looks like an ape, a farmer who is growing new bones, a teacher who hasn't slept for a month, and an old man who has gained enormous amounts of weight and has horns growing out of his head. Deeply unsettled, the locals feel something viral and horrendous is happening to them - they're anxious, confused, afraid, and need help.

Dr. Diaz is determined to understand what's happening, and to cure and reassure the people of the village. But when the sicknesses evolve and villagers start dying, things begin to balloon out of even the Doctor's serene control. The puzzle forms piece by piece as Anna's investigations into the disparate conditions reveal hidden connections. All the illnesses appear to be leading her to the previous GP, his death, and something she's never seen before.