estherfrewen I know the one you mean - Francis King's Act of Darkness , which is rather good, as I remember.
Onto book 3 for me, which was The House Opposite - Barbara Noble
One of my standout reads of 2018 was a Persephone reprint of Noble's Doreen, about an evacuee. This novel (an ebook from the pleasingly-named Furrowed Middlebrow imprint) is also set during the war but couldn't be more different.
Elizabeth Simpson lives in the London suburb of Saffron Park with her parents, fire-watching by night and commuting by day to her job in Soho with a firm of importers. She has a sort-of boyfriend serving in the Forces. But what nobody knows is that for three years she's actually been having an all-consuming affair with her married boss, Alex Foster, whose wife and children are living in the country for the duration.
The other main character is Elizabeth's neighbour, 18-year-old Owen Cathcart, waiting to go into the RAF. His intense hero-worship of his cousin, Derek, a trainee pilot, leaves him in terrified confusion that he might be homosexual (never spelled out as such, but it's pretty clear).
What happens to Elizabeth and Owen, and their families, is deftly interwoven against a gripping background of the Blitz, which is superbly evoked with gritty candour. The novel was written in 1943 so it's contemporary and clearly by someone who lived through the experience of picking her way over piles of rubble in Oxford Street. I couldn't put this down.