A three volume series about MESS -the Mars Experimental Space Station. Twins Georgie and Wills find a strange black box which, when held, plays a hologram of the Solar System. Inside are things which start them on a dangerous journey to uncover the truth of what happened to the pioneer scientists who took part in the project. For fifty years information has been ruthlessly suppressed and very few have any memory of the truth. The twins discovery will change all that.