As an astrologer, Lady Azenor Dougall sadly realizes her stars are a danger to her beloved siblings and has banished herself from her Scots home. As the Malcolm family librarian, she dutifully creates zodiac charts for her often eccentric and mysterious relations—until the day she realizes a dire conjunction of planets spells a fatal threat in a distant branch of the family. Lord Theophilus Ives, heir presumptive to the Marquess of Ashford, Earl of Ives and Wystan, is a dedicated astronomer who has perfected a telescope capable of seeing beyond Saturn's moons. Living in an all-male family that distrusts the women who regularly abandon them, Theo is undaunted by the tumult of his life—until the day the luscious Lady Azenor arrives to warn them that the marquess is in danger. Can Aster, the Prophetess of Doom, convince a laughing disbeliever of peril? And what are the chances she can escape the fate her stars predict if she lingers too long in Lord Theo's enthralling company?