Cover Her Face
P. D. James
“Of course,” the composed killer confesses at the end. “Think it out for yourself. Who else could it have been?” Well, at least three or four other people, by my count. But Chief-Inspector Adam Dalgliesh, making his first appearance in this 1962 title, pulls a rabbit out of a hat to solve what is a very traditional, locked-room, manor-house murder mystery, figuring out whodunit despite a near total lack of evidence and motive. A competent, but not very impressive debut for an author who would go on to better things.