How does Bobby find out about Nancy's murder? What is his reaction to the news?

Bobby finds
out about the murder through Mr. Ewalt, father of one of Nancy's friends, and one of the four
people to discover the Clutters' bodies on the Sunday morning after their murder.

Bobby has been thrilled to be the boyfriend of the popular Nancy Clutter, class
president, town sweetheart, and a cherry-pie baking teenager of energy and great potential.
However, Bobby's being Roman Catholic and Nancy's being Methodist had caused concern to the
Clutter family. (In the 1950s, differences between Catholics and Protestants caused more concern
than they do today.)

Bobby is devastated when he hears of his girlfriend's
murder. He had just been with her and the family the evening of the...