Red Letter Days by Sarah-Jane Stratford

 This is a pretty good novel, mostly historical with a dash of falling-in-love stuff in it. Kinda grim, being about the whole Red Scare thing, not much in the way of large-scale happy endings available, but some smaller-scale, personal ones--that'll have to do. Neatly written, lots of characters but mostly clear; the author herself is something of an expat in London and her experience coming to grips with the whole "two countries separated by a common language" thing is clearly reflected in the novel.