Complex sentence: Cornwell's Scarpetta series has been criticized for being repetitive and morbid by some critics whilst other reviewers claim that the characters in Cornwell's recent books have been "shallow" and "overused".
Split into simpler sentences: Cornwell's Scarpetta series has been criticized for being repetitive and morbid by some critics. Some reviewers claim that the characters in Cornwell's recent books have been "shallow" and "overused".