Tension mounts in Book Four of the action-packed I, Q series as Q and Angela continue their search for the truth in Texas.

Fresh off a "too close" encounter with the terrorist group, the Ghost Cell, in Kitty Hawk, North Carolina, Q and Angela head to San Antonio, Texas. As their parents' band, Match, prepares for a concert at the Alamo, the two discover that the Ghost Cell has its tentacles everywhere, including the Lone Star State. With each passing hour, Q and Angela uncover more clues and discover more leads. And the mysterious Boone and his SOS group leave them with more questions than answers, for there is much more to Boone than meets the eye.

With time running out to stop another Ghost Cell attack, Angela and Q and the others begin to wonder. Are they following the Ghost Cell or is the Ghost Cell following them?