DIVERGENT meets MEMOIRS OF A GEISHA in this dark YA thriller set within the walls of a lawless slum city, where Jin Ling searches for her lost sister and Dai struggles to complete an impossible mission.

There are three rules of survival in the Walled City: Run fast. Trust no one. Always carry your knife. Right now, my life depends completely on the first.

Run, run, run.

Dai traffics drugs for the most ruthless man in the Walled City. To find freedom, he needs help from someone who can be invisible...

Jin Ling hides under the radar, evading the street gangs as she searches for her lost sister.

Mei Yee survives trapped in a brothel, dreaming of escape while watching the girls who try fail and die.

Damaged and betrayed, can these three find the faith to join forces and escape the stifling city walls?

With a fantasy setting inspired by Kowloon Walled City, Hong Kong, Ryan's novel has a rich authenticity and an intense atmosphere, and its pace will enthral the reader from the very first page.