Two years later, the trains no longer carry survivors from Baltimore City. But it's far from empty. Desperate to move on, Shelby questions how far she's come since being freed. When an unexpected visitor delivers her lost map with clues from an old friend, she realizes it could be the key to unlocking the virus's origin. Shelby must face the infected again to uncover the truth behind the outbreak. As the only surviving sour with extraordinary abilities, Dean prefers isolation. He avoids interacting with the self-made hospital staff, but still agrees to round up rotters to be cured. When VioTech returns during accelerated efforts to clean out the city, Dean discovers special forces are targeting him. Unable to escape on his own, Dean is running out of options. Unlock the truth behind the virus in this exciting conclusion to the Lazarus City series.