Sebastiene was human... once. He might look like a nineteenth-century nobleman, but in truth he is a ruthless hunter. He likes nothing more than luring difficult opposition to a planet, then hunting them down for sport. And now he's caught them all...
When the Doctor and Sam arrive on Proxima II they find a settlement rife with superstition and unrest. The native Proximans are inexplicably dying out, and humans too are being killed in horrific ways, with each corpse's face being stripped bare....
The Doctor is in trouble. He has his own race to win. Stuck in a parallel dimension, pursuing the mysterious Sabbath, he must unravel a complex plot in which he himself may be a pawn. Following the only lead, the TARDIS arrives on Selonart -- a...