A drunken porter, answering the knocking at the gate, plays the role of a devil-porter at the gates of hell. He admits Macduff and Lennox, who have come to wake Duncan. Macbeth appears and greets them. Macduff exits to wake Duncan, then returns to announce Duncan’s murder. Macbeth and Lennox go to see for themselves. When they return, Lennox announces that Duncan’s servants are the murderers. Macbeth reveals that he has slain the servants. When his motives are questioned, Lady Macbeth interrupts by calling for help for herself. Duncan’s sons, Malcolm and Donalbain, plan to flee for their lives—Malcolm to England, Donalbain to Ireland.