The Ardent Lady Amelia (a Regency Romance‪)‬

Lady Amelia Cameron had been doing a bit of "spying" for her brother. Really, giving just enough encouragement to would-be French agents that they confided in her. Along came Lord Verwood, who seemed highly suspicious himself with his fake limp and the fact that no one in society knew him, to convince her brother to spoil all her fun. Amelia naturally decided to unmask the mocking fellow. Regency Romance by Laura Matthews; originally published by Signet