The one where the pretend Devesham is destroyed...
Any time a companion is brainwashed or duplicated and appears to be trying to kill the Doctor, I get nervy. I don't like it, and I suppose that's why it works narratively, because we're seeing our hero's best friend turn against him. It happens a few times - brainwashed Ben in The Macra Terror, brainwashed Dodo in The War Machines, evil Harry in Terror of the Zygons, duplicate Clara in The Zygon Invasion - but it's particularly rattling to see Sarah Jane try to kill the Doctor, as she does here. Or rather her android double does, when it sits up and starts firing at the fleeing Time Lord. The fact her face looks laughably like Sid the computer from Galloping Galaxies does undermine it somewhat though!
We learn an awful lot in this episode, including the fact that Styggron is one of the keenest project managers in the galaxy. He's a stickler for scheduling, and throughout this episode is obsessed with countdowns and timings, stating exactly how many minutes are left until the next phase of the Kraal plan happens. "Nothing will go wrong!" he insists when the Doctor challenges him, the plaintive cry of the ultimate Prince 2 trained project manager!







