The Portal 3: Portal to Xibalbá, Book 3 (Unabridged‪)‬

An alien being has escaped to Earth.

The portal is occupied by American troops, and the only humans who have ever set foot on the alien planet are in CIA custody. To make matters worse, a hostile force is now threatening both Xibalbá and Earth.

Can Tyler and Adriana save their new friends on the other side of the portal—and save their home planet from invasion at the same time?