Worth Their Weight in Gold — Philip Shafer

Mystery thriller romance. Book six in the series: The Dragon Lady, The Mad Doctor, The Bastard Son, and The Good Shepherd. When Christine Brooks discovers a revolver,unused airline tickets to Guadalajara,and a mysterious letter in French hidden in a secret compartment of the property she has purchased for her foundation, she's drawn into a dark romance and the sinister side of the lucrative organ transplant trade. Suspecting the previous owner was murdered, Christine asks too many questions in the wrong places.