Seventh grader Georges moves into a Brooklyn apartment building and meets Safer, a twelve-year-old self-appointed spy. Georges becomes Safer's first spy recruit. His assignment? Tracking the mysterious Mr. X, who lives in the apartment upstairs. But as Safer becomes more demanding, Georges starts to wonder: what is a lie, and what is a game? How far is too far to go for your only friend? Like the dazzling When You Reach Me, Liar & Spy will keep readers guessing until the end.
Seventh-grader Georges adjusts to moving from a house to an apartment, his father's efforts to start a new business, his mother's extra shifts as a nurse, being picked on at school, and Safer, a boy who wants his help spying on another resident of their building.