Purity by Jonathan Franzen

Pip Tyler doesn’t know who she is. She knows that her real name is Purity, that she’s saddled with student debt and a reclusive mother, but there are few clues as to who her father is or how she’ll ever have a normal life. Then she meets Andreas Wolf – internet outlaw, charismatic provocateur, a man who deals in secrets and might just be able to help her solve the mystery of her origins.