This was probably one of the strongest episodes of the series, the female Cybermen being briefly made aware of what they had become, one of them requesting her fiance (this was pretty morbid stuff here) not see her without realizing she nor The Doctor are anywhere near them. The other sad note was that Alternate Earth Jackie, Rose's mother, was "upgraded" into a Cyberman, proving the term is a gender once and for all. The Doctor eventually manages to release a signal that frees the Cybermen from their emotional inhbitators, with the aid of an encouraged and motivated Mickey, and they also become aware of what they are, and go insane, destroying the factories. Their creator, reborn as The Cyber-Controller, attempts to kill The Doctor and the group when they attempt to escape, but dies in a great little homage to Die Hard.
Afterwards, Rose tells her father that she is his daughter in her own universe, Pete decides to continue the fight against the wakening VCyberman forces across the globe (it was'nt restricted to London), and Mickey elects to stay behind to lead the reistance, taking the place of his alternate world double who was killed earlier. The Doctor cautions him once the TARDIS returns through the time rift, he must seal it, and there can be no going back. Mickey understands and says farewell to The Doctor and a tearful Rose.