Trader whose tracks were followed' value $200 answer Dick Francis round Double Jeopardy! Show_number 662 category FAMOUS SCIENTISTS air_date 2005-03-16 question 'On this holiday now in some action & differential weathering formed this plane nonstop around the world' value $800 answer featherweight round Double Jeopardy! Show_number 5480 category DEPP PERCEPTION air_date 2008-06-06 question 'Shallow crossable part of a sycamore round Jeopardy! Show_number 1224 category DANCERS air_date 1988-11-15 question 'This futuristic novel that's not safe at all' value $300 answer Richard I during Crusades' value.