An investigative biography traces the life of an English actress who becomes a peer's wife and a devoted supporter of an imprisoned queen, taking an active role in Royalist efforts to liberate the queen's young son. The account relies on extensive archival correspondence recovered by the researcher, which reveals the plotting, funding, false leads, impostures, betrayals, and frustrated attempts surrounding proposed escapes. Combining close documentary reconstruction with reflection on loyalty, political intrigue, and the difficulty of resolving contested testimony, the work reconstructs persistent conspiracies and the enduring uncertainties around the royal captivity.