Sarah Hart

Sarah Hart is a human from Paradise, Ohio. She loves photographry and animals. When John (Number Four) arrives in Paradise, Sarah becomes John's first girlfriend. When Mark James' house is on fire, John rescues Sarah from the building using his legacies. After that, John tells Sarah everything about who he really is. In the big battle at Paradise High School, Sarah was in the midst of the battle, doing everything she could do to keep herself and John alive. Sarah even killed a Mogadorian.

When Six, Four, and Sam return to Paradise in The Power of Six, Four visits Sarah. But, Sarah is tricked into giving them up to the F.B.I.

Sarah is captured by the U.S. Government and the Mogadorians and is sent to a U.S. Government base in New Mexico. She has been tortured and beaten into giving away everything she knew. When Four, Seven, Eight, Nine, Ten, and Bernie Kosar come to rescue Six, they also rescue Sarah. After killing off dozens of Mogadorians, All 8 of them escape.