When Tommy Burke took me out to Gundark Island to see the alien, I wasn’t really expecting much. Maybe I was just going because I thought it would be cool to take a ride in Tommy’s canoe. Or maybe I was just hoping Tommy might turn out to be a friend. If there really was an alien there, too, then all the better. After passing a hand-painted sign that said “Please Don’t Feed the Alien,” we came to a clearing in the middle of the island where I saw a lump in the ground. At first it looked like a small boulder, except that it had a grayish-purple tint to it. Upon closer inspection it vaguely appeared to have scales.

My children do not dream and neither do I. But that does not mean our sleep is sound. Sometimes they wake in the middle of the night, eyes wide and wet, grasping for a reason they stare into the darkness. I wish I could tell them it was a nightmare, that whatever they are feeling isn’t real, but instead I tell them to close their lids and lay lightly back into sleep, which they always do. My children are good at taking orders.

Seth Calder felt like he had barely dozed off when his alarm blared at 6:00 a.m. Level morning sunlight leaked through the blinds onto the birch and linen furniture of his Stockholm apartment. Amalia was already in the shower, so he lurched out of bed and went to check his news feed. NASA TO LAUNCH MARS CREW TODAY, said the first headline. The picture showed the ten crew members in flight suits, grinning at the camera.