Americans Jenny and her brother Tom are off to England. Tom to university, to dodge the Vietnam draft, Jenny to be the new girl at Illington Hall, which the students call Ill Hall. This is Jenny's chance to finally be special and stand out, so when she arrives she tells everybody a lie. But in the small world of Ill Hall, everyone has secrets. Jenny pretends she has a boyfriend. Robbie and Luke pretend they don't. Brenda won't tell what happened with the school doctor. Percy won't tell about his famous dad. Oona lies to everyone. Penelope lies only to herself.