Martin discovers a girl bound and gagged with tape inside a moving train. I don't think the girl is Diana though. (Udpdate: the girl is Angie).
Issue is Annual #2.
A great chloroform scene featuring Diana Lombard. Diana opens her door to find a gang of thugs. They burst in and chloroform Diana, kidnapping her. There are some nice unconscious shots as they drag Diana out of her apartment.
Use your imagination here. Phantom Girl is walking along, minding her own business, when the vacuum cleaner suddenly comes to life and gags her mouth. It looks kind of like she is being chloroformed...by a vacuum cleaner. Yeah, I am getting desperate...
Kei is seen unconscious several times. The first scene spans between volume 6 and 7. The second scene shows Kei manifested in some sort of energy and falling unconscious into a robot's arms. Several nice arm carries occur towards the end.