Lucy and Edmund find Peter and Susan, and Lucy excitedly tells them that Edmund has also been to Narnia. Cruelly, Edmund lies that he and Lucy were only playing make-believe. Edmund craves his siblings’ approval, but Susan and Peter think he is spitefully manipulating Lucy.

Scared that Lucy’s perception is breaking from reality, Susan and Peter decide to speak to the Professor. However, they are surprised by the Professor’s response—he seems to believe Lucy. The Professor advises them that “unless any further evidence turns up, we must assume that [Lucy] is telling the truth” (56). The Professor also challenges the pair’s logic for thinking that Narnia doesn’t exist and suggests that Narnia exists in a separate time, which explains why Lucy thought she had been in Narnia for hours when only minutes had passed in their world. The Professor’s advice gives Susan and Peter pause, and they decide to remain quiet about the whole subject, although Peter ensures Edmund stops tormenting Lucy.

Because the Professor’s house is so old and peculiar, it attracts a number of visitors. The Professor allows the visitors into the house to look at the rare books and unusual artifacts. One day, Mrs. Macready, who has already instructed the children to keep out of her way, is showing a group of visitors around.