Sounds great. The plot is rather hard to follow. Mary hears two gun shots while asleep and then her and Barney run all over town looking for the murderer? I missed something somewhere.
Well, you see, Barney and Mary are actually Martians wearing human skin suits. They were sent here in advance to see if there were intelligent life on this planet.
Finding none, they went about creating robots that only simulated real life and they began to write stories that kept them amused until Cats were invented.