The Concubine's Secret

This book is set after events of The Russian Concubine, after Lydia's mother's death by spies and after she discovered family secrets of her father, Jens.

Lydia Ivanova goes with her half-brother, Alexai Serov, and their protector, Live Popkov, to find Lydia and Alexai's father, who was prisoner of a labor camp.

While on the train to Russia, she meets Antonina, who is the wife of Dmitri Malofeyev, the ruthless officer who is head of the camp where her father is.

Meanwhile, in China her lover, Chang An Lo, is a high-ranking officer in Mao Zedong's army, after being released from prison.

Things turn worse when Alexai goes missing and Lydia finds herself for trouble; it's now up to Chang An Lo to save her.