Ngaio Marsh

"A delicious and classic country-house mystery. Well, country-castle. The lord of the manor is Sir Henry Ancred, a celebrated Shakespearian actor (and pompous bore), who has arranged to have his portrait painted by none other than Agatha Troy, wife of Inspector Roderick Alleyn. She's rather glad to be stepping out of Alleyn's shadow, so much so that when Ancred is killed at his own birthday party, Troy at first tries sleuthing on her own. But she's...