The fifth book of the #1 New York Times bestselling I Am Number Four series!

The Garde have suffered an unbearable loss. Number Five has betrayed them. Eight is gone forever. Ella has been kidnapped. The others are now scattered.

In Chicago, John makes the unlikeliest of allies: a Mogadorian named Adam, who has switched sides. Adam knows the Mogs secrets, and he knows where to hit them: their command base near Washington,

...

Paige Miller fears she is the only person left alive in Ohio until she meets a handful of other survivors, and together they struggle with the knowledge that their new reality is the first part of an alien invasion.