The Dangerous Days of Daniel X is a novel by James Patterson and co-author Michael Ledwidge, written in the same vein as his Maximum Ride series.

In the sewers of Portland, Oregon, he defeats number 19 on the List of Alien Outlaws on Earth, Orkng Jllfgna, in hopes of working his way up to number 1: The Prayer, the alien who murdered Daniel's parents.

Daniel then leaves to go to Los Angeles in search of number 6 on his List, Ergent Seth.

While traveling, he spends a night in the woods, camping with the "friends" he conjured up with his powers: Joe, Willy, Emma, and Dana.

Daniel decides to search the city for clues about the whereabouts of Seth, and stumbles in upon a child-slave and drug-dealing operation.

The following day after school, Daniel walks Phoebe to his house, which he finds destroyed.

The next day, Daniel goes back to school and, so as not to seem too smart, purposely flunks a history test.

After his house is compromised again, Daniel feels it is unsafe to return, so he goes to spend the night with Phoebe.

Seth deactivates Daniel's powers, shoots him, and drags him into a spaceship.

The ship flies away from Earth as Daniel is put into a cell for the duration of the trip.

Daniel escapes from a landing party and flees under the wreckage, where the few survivors live.

During the fight, Daniel turns into a tick and enters Seth's head via his ear.

Phoebe Cook – In the middle of the book, Seth impersonates her, pretending to be Daniel's girlfriend, thus earning his trust.

But one night, while he sleeps in Phoebe's closet as she is dreaming, Daniel reads her mind.

The dream is about Seth in a classroom, trying to figure out a confusing problem, and everyone is calling him "dumb-dumb."

Later, he describes Seth's eyes as "Shiny, bulging, blood-red orbs embedded in the loose skin like larvae."

She, along with Joe, Emma, and Willy, were assumed dead when the planet was attacked, although their bodies were never found.

She, Joe, Willy, and Dana were a part of Daniel's "drang" (an alien word for a group of close friends, possibly also meaning 'Gang').

Judy McGillicutty - A waitress that Daniel met looking for his target in the second book After the success of The Dangerous Days of Daniel X, Patterson followed up with several sequels: Watch the Skies (2009), Demons and Druids (2010), Game Over (2011), Armageddon (2012), and Lights Out (2015).

It was reported in May 2008 that New Regency Productions obtained the rights to The Dangerous Days of Daniel X.