The twins reunite and all misunderstandings are cleared up
The Duke marries Viola
Feste enters with Malvolio's letter to Olivia, he is not in a
great hurry to deliver it. Duke Orsino, Cesario, and others enter.
Orsino sends Feste to fetch Olivia. Antonio enters with officers and
Cesario tells Orsino that Antonio rescued him from Sir Andrew. Orsino
remembers Antonio--he used to be a pirate and did a great deal of damage to
Orsino's fleet, however, he was also a brave honorable opponent. When
Orsino asks Antonio why he is in Illyria, Antonio replies that he is the victim
of witchcraft--he saved Cesario's (Sebastian's) life and then the
"ingrateful boy" would not return his money. Olivia
enters. Orsino tells Antonio that Cesario has "tended" him for 3
months and what Antonio has said is impossible. Olivia asks why Orsino is
there and accuses Cesario of breaking an appointment with her. Orsino is
angry, he knows that Olivia is in love with Cesario and he orders Cesario to
leave with him. Olivia is dismayed at Orsino taking her new husband
away. Cesario says he goes willingly with Orsino. Olivia calls for
the priest who married her and "Cesario" to verify that they are
married--he comes and verifies. Orsino is livid. Sir Andrew and Sir
Toby enter crying for a surgeon because he has been wounded by
"Cesario" (Sebastian). The surgeon, however, is drunk and cannot
come and everyone is generally confused with what is going on. Sebastian
now enters and apologizes to Olivia for wounding Toby, reminds Olivia of the
words they exchanged, and joyfully recognizes Antonio. Antonio compares
Cesario and Sebastian to "an apple, cleft in two." Viola now
speaks, telling Sebastian that he resembles the brother she thinks died at sea
and begins to describe her father. Sebastian interrupts her saying that
his father had the same characteristics. Viola states that her real
identity is hidden by "masculine usurp'd attire." She is his
twin sister and can prove it through the sea captain. Sebastian tells
Olivia that she has been deceived. Malvolio is brought forward and Feste
enters with Malvolio's letter. Malvolio enters with Maria's love letter
and Olivia recognizes that Maria has forged the note. The prank is
revealed and Sir Toby as recompense has married Maria. Olivia declares that
Malvolio shall be plaintiff and judge against the pranksters. Orsino turns
to Viola and asks her to marry him. Feste closes the play with a song.