"The first Moonbase came along far earlier than anyone would have expected, early in the twentieth century, thanks to the discovery of the anti-gravity material, cavorite.
Unfortunately, the mission to establish it used up all the cavorite in existence, but they knew a deposit for the return trip could be found on the Moon.
The gamble to set up a multinational base was worthwhile. It had to be. What with all the tensions on Earth - if this didn't work, a Great War could break out.
It had to work. It HAD to. Time was ticking out and they had to find a cavorite deposit, or the mission was doomed.
A missing person - a murder? - was the last thing they needed."
