Twelfth and Race — Eric Goodman

Life takes a strange turn when Richard Allan Gordon, thirty years old and as white as they come, discovers that, as a result of identity theft, five-year-old Jada Reece Gordon bears his name. The product of a middle-class Jewish upbringing, Richie finds himself completely in love and lust with Jada's mother, LaTisha, a twenty-five-year-old African American nursing student, and longs to be a father to her child.