Part literary mystery, part an examination of what constitutes fiction versus reality, Ghostwriter is based on the true story of author Lawrence Wells, then 45, hired by the University of Mississippi in 1987 to ghostwrite a novel for a wealthy, eccentric donor ("Mrs. F," then 75), who was convinced that Edward de Vere, 17th Earl of Oxford, was William Shakespeare. Believing herself to be the reincarnation of Queen Elizabeth I, Mrs. F treated...