The Agency, tome 4
Y.S. Lee2014

« Convicted fraudster Henry Thorold is dying in prison, and the Agency asks Mary to take on one last case: to watch for the return of his estranged wife. Mrs Thorold is an accomplished criminal and will surely want to settle scores with Mary’s fiancé, James. With the additional complications of family and conflicting loyalties, the stakes for all involved are higher than ever. »

Titre original : Mary Quinn Mystery, book 4: Rivals in the City (2014)