January Janus, the god of two faces, and a college alumni class introduce Ellery to a secret society... February Ellery wrestles with the ghost of a President of the United States to solve a buried coin mystery... March A stolen income-tax form, a kleptomaniac, a bookie, and an artist become the ingredients of a murder... April Ellery unravels an old crime with the help of the Roman Emperor, Caligula, and a pair of dice... May A battle-scarred bugle and three Civil War veterans almost baffle Ellery... June The goddess Juno, shades of the Borgias, and a modern Helen of Troy play havoc with a June wedding... July A stone gargoyle, falling from a gloomy, Gothiclike tower, nearly causes sudden death... August In the moonstone month, Ellery hunts for buried treasure... September A Missouri professor, interested in Edgar Allen Poe, leads Ellery to a frightening conclusion... October A Halloween party turns out to be more grim than expected... November Ellery and Nikki deliver Thanksgiving baskets to the needy and discover a dangerous secret... December The famous jewel thief, Comus, nearly outwits Ellery in a Christmas mystery of dolls, danger and deception