Another murdered man is discovered, and an affected Harry bursts in....
The coolant flows halting the danger of the reactor. Harry is dealt with, but radiates a lot of heat. The Doctor recalls hearing the noises in Krakatoa. Something is turning people into mad green killers, the Doctor has to deal with an attack. The computer system is giving some worrying messages, which Stahlman chooses to ignore, he and the Doctor clash, as a result power to the Doctor's TARDIS project is cut. Stahlman has handled a jar containing the Green slime found on the drill, and has removed a component from the computer and destroys it. The Doctor manages to power up the Console and take off.
The stunt involving Wyatt and the Doctor is superbly done, it looks realistic, it's funny it looks more modern and realistic then similar stunts done in the show years later.
Sometimes with a 6 or 7 parter there can be an early dip. Fortunately not here, this is another exceptional part with absolutely no flaws.
Olaf Pooley is putting in a particularly powerful performance as Stahlman, he's very much up to the Doctor and the Brig.
Very impressed with Part 2, all as it should be this is a brilliant episode. 10/10