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?