Onesimus is a slave. Eirene is a rich merchant's daughter. Onesimus longs to gain his freedom and Eirene's love. However, he doesn't realize where true freedom lies. He wants nothing to do with Jesus Christ. His master, Philemon, may follow the teachings of the Christ and his apostle Paul... but Onesimus has other plans.
A boy in the Middle Ages learns the meaning of the "open door that no one can shut" from Revelation 3:8 in this Newbery Award book. When he falls ill and loses the use of his legs, Robin finds there is more than one way to serve his king and save the castle.