After almost a year of working together, Grace and Euan Cameron have become the premiere Watcher and Companion team for the history-guarding Council. When Grace is suddenly called on a solo mission, Euan is reluctant to let her go alone, wary of being in a position where he is unable to assist her. Euan’s worst fear is realized when everything goes horribly wrong upon Grace’s arrival at Versailles in 1748, and Grace finds herself cut off from The Council and unable to be extracted.

Against all protocol, Euan is immediately sent to assess the problem and bring his beloved wife home, but the stakes are higher than anyone could have realized. To save his wife, Euan must face the ghosts of his past head-on while trying to prevent a third attempt to restore the Stuart monarchy – but can he do it before Grace’s time runs out?