Dunhuang, China 1908 - An archaeologist discovers an ancient temple, but the legendary library rumoured to be at its heart is what he wants to find. The present - Archaeologist Sasha Blake is studying a replica of an ancient manuscript at Bristol University. Offered sponsorship by a wealthy silk trader, Jon Solomon, she is desperate to find the original manuscript and four powerful rings that accompany it. But her investor is hiding terrible secrets. When she becomes Solomon’s next victim and realises the truth about him, she becomes the bait in a web of conspiracy set up by a covert organisation, The Agency. Once more her fate is bound to Agent Tom Sheridan, a year after their last encounter and as their relationship deepens, he is her only ally. Can Sheridan and Blake find the manuscript and the rings in time to stop Solomon, or are they about to fall into his trap?