"Laos, 1979: Dr. Siri Paiboun, the twice-retired ex-National Coroner of Laos, receives an unmarked package in the mail. Inside is a hand-woven pha sin, a colorful traditional skirt worn by women in certain northern Lao tribes. A lovely present, but who sent it to him, and why? And, more importantly, why is there a severed human finger stitched into the sin's lining? Siri is convinced someone is trying to send him a message, and won't let the matter...

The Doctor and his companion travel across time and space.

The dazzling Thirteenth Doctor falls out of the sky just in time to thwart an alien huntsman who is stalking human prey. With little time to spare and the population of Sheffield (and Earth!) at risk, the Doctor recruits three new friends, gentle Ryan, no-nonsense Yasmin and Ryan's step-grandfather, Graham, who soon feel more like family than companions. Join the foursome in ten fresh and enormously thrilling rollercoaster adventures across time and...