PRINCETON — St. Louis Parish in Princeton will host a book study on "Angels and Saints: A Biblical Guide to Friendship with God's Holy Ones" by Scott Hahn. The class will meet from 8:30 to 10 a.m. Tuesdays from Sept. 27-Nov. 25 at the home of Sister Anne Germaine in Princeton. To register or for more information, call Susanna Prushinski at 815-872-0160. Registration is required to order the materials. The cost is $15 for the book.