Millie Gibson reads this brand new novel adventure for the Fifteenth Doctor and Ruby Sunday, as played on TV by Ncuti Gatwa and Millie Gibson.

April, 1242: the Doctor and Ruby answer a distress call sent from medieval Russia. The signal’s sender? Ranavere, an alien girl forced to take part in a barbaric conflict between the armies of Estonia and Novgorod on the frozen surface of Lake Peipus.

Ranavere wants to escape, but her distress call has summoned her warmongering sisters, intent on preserving family tradition whatever the cost. And as human battle begins, the Doctor and Ruby must face a more devastating threat – a monstrous entity with plans of conquest, growing stronger beneath the icy lake…

Reading produced by Audio Always. Sound design by Oliver Denman. Executive producer for BBC Audiobooks: Michael Stevens.