Brian Enke joined The Space Show as the guest for this special program. Mr. Enke discussed his new science fiction mystry book, "Shadows of Medusa." In discussing this book and its plot, issues relating to sending humans to Mars came up as the book is about three people going to Mars, but with substantial intrigue and secret agendas. In terms of talking about Mars, we discussed water, methane, and the possibility of life on Mars, the culture of risk aversion in our society, engineering, humans versus robots and lots more.