Marine scientist and shipwreck hunter, David Mearns, on his discoveries on the ocean floor and dealing ethically with graveyards at sea. Was the Bolshevik Revolution October 1917 the closest humanity has come to applying Christian principles? Bishop Nyabobo from Burundi on peace, reconciliation and nation building. Keith Getty tells us about what inspires and influences him when he's writing hymns. Political commentator, Alex Kane, talks about books that inspire him - The Adventures of Sherlock Holmes, and To Kill a Mockingbird.