Digit Series by Annabel Monaghan

Farrah "Digit" Higgins may be going to MIT in the fall, but this L. A. high school genius has left her geek self behind in another school district so she can blend in with the popular crowd at Santa Monica High and actually enjoy her senior year.  But when Farrah, the daughter of a UCLA math professor, unknowingly cracks a terrorist group's number sequence, her laid-back senior year gets a lot more interesting... moreFarrah "Digit" Higgins may be going to MIT in the fall, but this L. A. high school genius has left her geek self behind in another school district so she can blend in with the popular crowd at Santa Monica High and actually enjoy her senior year.  But when Farrah, the daughter of a UCLA math professor, unknowingly cracks a terrorist group's number sequence, her laid-back senior year gets a lot more interesting. Soon she is personally investigating the case, on the run from terrorists, and faking her own kidnapping-- all while trying to convince a young, hot FBI agent to take her seriously. So much for blending in . . . less

Digit and John are back for a second book and in way over their heads. To say eighteen-year-old Farrah Higgins—or Digit—is good at math is a laughable understatement. She’s been cracking codes since childhood, and is finally at home with “her people” at MIT in Cambridge. Her talents are so off the charts that her laptop is under surveillance by both the CIA and an ecoterrorist named Jonas Furnis... moreDigit and John are back for a second book and in way over their heads. To say eighteen-year-old Farrah Higgins—or Digit—is good at math is a laughable understatement. She’s been cracking codes since childhood, and is finally at home with “her people” at MIT in Cambridge. Her talents are so off the charts that her laptop is under surveillance by both the CIA and an ecoterrorist named Jonas Furnis. So when she thoughtlessly hacks into the Department of Defense’s database, she lands in serious hot water inside and outside the law. Readers will be sad to turn the last page of this suspenseful, sassy, super smart thriller, the sequel to A Girl Named Digit. less