Grayscale

"Grayscale," the first book in the Callahan Chronicles series by Paul Campbell, is a captivating historical thriller set in the 1890s that intertwines real events and classic literature characters into a tale of adventure and mystery. When a smuggling mission in Paris ends in violence, Nick Callahan finds himself helping a mysterious woman with amnesia, and together they navigate a dangerous web of deceit and supernatural intrigue. Filled with suspense and rich in historical and literary references, this novel offers a thrilling journey through the French countryside.