For 10 points, name this book of the Tanakh read aloud during Purim.
The wife of this book's antagonist proposes the construction of a gallows ten cubits high. Bigtan and Teresh attempt to poison the king, who promises the title character any request, up to half the kingdom. Vashti refuses to show her beauty at a drunken party and is banished. The title character replaces her as Ahasuerus' queen, while her uncle Mordechai falls into disfavor with the would-be Jew murderer Haman. For 10 points, name this book of the Tanakh read aloud during Purim.
The wife of this book's antagonist proposes the construction of a gallows ten cubits high.
The Book of {Esther} [accept {Megillat Esther}, prompt on {Megillah}]