The Upgrade Books in Order

When his wife becomes seriously ill, Jason Hunt confronts a powerful corporate alliance that may control her survival. To save her, he must master unfamiliar technology, navigate business intrigue, and stay ahead of professional killers.

Living under an assumed name in Hong Kong, Helen Chen hopes she has escaped her past. An ordinary conversation raises suspicions about her employer, drawing her into an investigation that threatens the peaceful life she has built.

As the 2007 financial crisis approaches, a corporate alliance expands its influence. Hacker Helen Chen becomes its target, while CIA officer Andrew Hunt is assigned to fight it, forcing the unlikely pair to cooperate to survive.

Mercenaries control the streets, the president is missing, and Jason Hunt's remaining forces face starvation. A secret factory in the Sahara could secure Alexander Engel's victory, leaving Hunt's allies struggling to resist an increasingly powerful enemy.

Alexander Engel prepares to seize power openly as civil unrest spreads. Jason Hunt and his allies, repeatedly forced onto the defensive, must find a way to fight back before Engel's willingness to destroy cities makes resistance impossible.

Alexander Engel moves to crush the remaining resistance. While Max Schlager and Helen Chen undertake a dangerous mission, Jason Hunt's crew prepares for a final confrontation that will determine whether the corporate cabal can be defeated.