THE ALIENS ARE COMING! Or are they already here? That's what Araya and Christina want to know, so they're going to 6 cool places where people say they've seen visitors from another world! Did a UFO crash in a field in Roswell, New Mexico? And if so, where is it now? Is the government hiding spaceships AND aliens on a military base called Area 51? Did a British policeman and a little girl in Brazil both see aliens near their homes? Was the huge object people spotted falling from the sky into Nova Scotia's Shag Harbour a UFO? Are the mysterious circles that keep popping up in farmers’ fields around the world messages from aliens? Do you think you know the answers to these questions? Then you'll be as surprised as Araya and Christina were! Plus Doubting Dave shows you how to use Earth's magnetic power just like UFOs might, AND a cool way to make fake UFO photos that will fool your friends!