On this edition of Conversations, Rick Riordan talks with host Dan Skinner about his latest novel, “Daughter of the Deep.” Riordan is the author of five #1 New York Times best-selling middle grade series: “Percy Jackson and the Olympians,” “The Heroes of Olympus” and the “Trials of Apollo,” based on Greek and Roman mythology; the “Kane Chronicles,” based on Ancient Egyptian mythology; and “Magnus Chase and the Gods of Asgard,” based on Norse mythology.