Vile Bodies by Evelyn Waugh (1930). This careening novel follows a group of shallow, well-off Brits to motor races and antic parties. Joining in on the Bright Young Things’ mad doings are a writer named Adam Fenwick-Symes and his on-again, off-again fiancée. War looms, but Waugh’s style—dry and bubbly as the novel’s flowing champagne—keeps us laughing, even as characters descend into madness or head for the battlefield.