Cathy actually moved into this flat prior to the onset of her second year as an Avenger (very early 1963); she is first seen living here in "Killer Whale." It certainly made a change from the dreary little flat she occupied previously.

Welcome to the future. Above is a bird's-eye view of the main living space. Among other things, this ultra-modern dwelling features an intercom system to screen visitors and a remote-controlled powered sliding main entrance (center rear). The sofas, as such, face a cylindrical freestanding fireplace (see the small image at top). The walls are comprised of slender solid panels alternating with adjustable metallic louvers. Below is a view of the kitchen.

The effect of the unusual wall treatments might be a little disconcerting for some, as it bears an unfortunate resemblance to the interrogation chamber that Steed had to endure in "The Nutshell" (right).

Oh, and Cathy, who is an anthropologist employed as a museum curator, must do a lot of side work to afford such a place, don't you think?