From Jane Hamilton, author of the beloved iNew York Timesi bestsellers bA Map of the Worldb and bThe Book of Ruthb, comes a warmly humorous, poignant novel about a young man, his mother's e-mail, and the often surprising path of infidelity. pHenry Shaw, a high school senior, is about as comfortable with his family as any seventeen-year-old can be. His father, Kevin, teaches history with a decidedly socialist tinge at the Chicago private school Henry and his sister attend. His mother, Beth, who plays the piano in a group specializing in antique music, is a loving, attentive wife and parent. Henry even accepts the offbeat behavior of his thirteen-year-old sister, Elvira, who is obsessed with Civil War brreenactments and insists on dressing in handmade Union uniforms at inopportune times. pWhen he stumbles on his mother's e-mail account, however, Henry realizes that all is not as it seems. There, under the name Liza38, a name that Henry innocently established for her, is undeniable eviden