Montag shows Mildred all the books he had hidden behind the grille of the air-conditioning system. Mildred is of course horrified and panics. He tells her that Beatty is already on to him and he must act now.
Explanation:g
Firehouse leader Captain Beatty goes to Montag in order to convince him that the fireman’s job is important. He explains that people began to lose interest in reading after the advent of television and that objections to some passages in books by interest groups and minorities led to censorship. Eventually it was felt that books and learning in general created inequality and unhappiness, and so books were banned. After Beatty leaves, Montag reveals to Mildred that he has hidden several books in the house. They begin reading, but he finds the books hard to understand, and Mildred prefers TV.
The action of a play is generally confined to a "world" of its own—that is, to a fictional universe that contains all the characters and events of the play—and none of the characters or actions moves outside the orbit of that world.