Where shall I get the detailed summary of this book?
You can get to two good sources by clicking on the reference link below which will take you to the e-Notes Study Guide for The Robe. Both sources are by Masterplots and should supply you with most of the information you are looking for, including an overview of the plot, names of the principal characters, etc. Another excellent source is Book Review Digest, which is available in the reference departments of most good libraries. A new volume comes out every year. You would have to look for the year in which The Robe was published and for the year after that (because a lot of books don't come out until December and don't get reviewed until the following year.). Book Review Digest gives you excerpts from reviews by many of the leading periodicals, including the influential New York Times. Then if you want to refer to a complete review, you can look it up in a bound volume in the stacks or else in the microfilm department. If you don't know how to use microfilms and microfiches, the libarian will show you. The machines will usually take photocopies of pages you want to keep. The Robe was a big best-seller in its day and should have plenty of reviews in popular periodicals as well as in religious journals.