Margery Allingham has always been my favourite of the "Golden Age" crime writers, not least because the subtlety of her writing allowed her to change her books to reflect the changing times after WW2. "The Oaken Heart" is of course non-fiction, and well known as one of the best descriptions of ordinary English people in the first year or two of the war. It really is impossible to recommend it too highly, for its subject matter and for its writing. (Typically of her glancing humour, Allingham describes a woman as like a Shakespearean actress playing the Queen of Denmark "before all the trouble started.") And now there is this excellent new edition, with notes and some of Marge's letters and diary entries for the relevant period, all beautifully put together by Julia Jones, who wrote the Allingham biography "The Adventures of Margery Allingham". (Which I also highly recommend.) "The Oaken Heart" has been out of print or hard to obtain for a long time, so this new edition is very welcome indeed. It is so fascinating for any fan of Allingham's Campion novels to read the diary entries referring to her finishing "Traitor's Purse" through the Phoney War and then preparations for a possible German invasion.