Chapters Twenty-Three, Twenty-Four, and Afterwords Summary

In Chapter Twenty-Three, the children are being chased by a man. The man chases and catches Calder on a playground, but Petra is able to find a security officer. She tells him what has happened on the playground, but when they get there and get out of the squad car to look for Calder, the man jumps into the squad car and takes The Lady Writing. A search begins for Calder and the man. Petra realizes that the Castiglione's treehouse would make a great hiding place. This is where she finds Calder and the painting.

In Chapter Twenty-Four, Old Fred is found dead on the train from a heart attack. On the playground, Calder pretended to be unconscious. He then followed Old Fred to the Castiglione's treehouse, and when Fred climbed a branch to the...