Doctor Who: Shadow of the Ice Warriors part three

Viggo is determined to raise an army against Gorm the Old, to stop his country falling to the Ice Warriors, and with the Doctor’s help, he stands a very good chance of taking control. The Doctor is still learning who he is, and his eyes are about to be opened to what this new incarnation can achieve. As Ice Lord Valtarr closes in on his quarry, Gorm and Lady Thyra face danger from every direction. But if Princess Kasstar’s secret could lose her their greatest ally, the stronghold is sure to fall.