The Shadow Vortex

Cardinal Ollistra exploits the War Doctor’s affection for Earth to send him to East Berlin, 1961, on the trail of a Dalek agent. Lara Zannis has breached the planet’s quantum shield on a very special mission for the Dalek Time Strategist.

Caught between MI6 and the KGB, the War Doctor must first escape the Stasi before he can hope to stop Lara. Cold War scientists are about to make a breakthrough - the Daleks want control of the Shadow Vortex, and Agent Zannis can provide it.