what malcolm discoversa after testing macduff

Macduff’s loyalty to Scotland leads him to agree that Malcolm is not fit to govern Scotland and perhaps not even to live. In giving voice to his disparagement, Macduff has passed Malcolm’s test of loyalty. Malcolm then retracts the lies he has put forth about his supposed shortcomings and embraces Macduff as an ally. A doctor appears briefly and mentions that a “crew of wretched souls” waits for King Edward so they may be cured (4.3.142). When the doctor leaves, Malcolm explains to Macduff that King Edward has a miraculous power to cure disease.