The Unpleasantness At The Bellona Club by Dorothy L. Sayers

In this classic detective novel, the astute and charming Lord Peter Wimsey finds himself embroiled in a perplexing mystery when the death of an elderly general at the Bellona Club, a prestigious London gentleman's club, turns out to be more than it seems. As Wimsey delves deeper into the case, he uncovers a web of family secrets, financial intrigue, and hidden motives, all while navigating the club's rigid social hierarchy. With his keen intellect and unerring sense of justice, Wimsey must unravel the truth behind the general's demise before the tangled threads of deceit lead to further unpleasantness.