Margaretha has always been a romantic, and hopes her newest suitor, Lord Claybrook, will be her one true love. But then an injured man is brought to Hagenheim Castle, claiming to be an English lord Claybrook attacked and left for dead. And only Margaretha understands the wild story.

Margaretha convinces herself “Lord Colin” is just addled. Then Colin retrieves an heirloom she lost and asks her to spy on Claybrook as repayment. Margaretha knows she could never be a spy—she unable to keep anything secret—though what she soon discovers changes her romantic notions not about Claybrook but possibly Colin as well. It is up to her to save her father and Hagenheim itself from a wicked plot.