The award-winning science novel The Horsemen of Mars come with the solar wind. The sparks beneath their invisible hoofs illuminate the nights of the red planet. A marvellous sight from the safety of your base on Mars. But when you are lost in the red planet's desert, the Horsemen of Mars show their fatal facet as their wild hunt is tracking down your fragile body. Join our Mars crew in the most critical time of their mission! Follow them into the struggle for their lives on the hostile pla...