The Zodiac Regency Books in Order

Two French agents enter London society under false identities while pursuing opposing objectives around a stolen official seal. Irène serves the English crown and Philippe obeys Napoleon’s government, but attraction complicates the deception on which both their missions depend.

Competitive debutante Clarissa sets her sights on a duke while developing an unexpected bond with his thoughtful friend. Lord Uxbridge pursues another suitable match despite his feelings for Clarissa, leaving their agreement to remain friends increasingly difficult to sustain.

During her first London season, Teodora investigates secrets about her father while navigating society under a formidable chaperone. Her search draws the attention of intelligence chief Sebastian, whose growing affection becomes entangled with truths that could threaten his carefully ordered future.