This high-octane episode sees the remaining pairs in some of the world's most iconic locations - from the secret rooftops of Venice, traversing high above the busy bazaars of Istanbul, and breath-taking jumps onto moving train in the Chilean desert. The Bone Brothers enjoy a rare moment of respite on the golden sands of Jamaica before an epic hunt for a scuttled vessel and a £200,000 question. (thetvdb.com)