 Wolfe rationally deduces that Chapin is out to play payback — decades ago, a prank then-Harvard University scholar Hibbard and a group of chums played on Chapin went awry, causing him to be in his current state.Hibbard shares with Wolfe that his daughter (Irene Hervey) is romantically involved with Chapin's elder brother, Mark (Joseph Allen).With that, he quietly makes a move.