Jack

Jack has been your roommate since freshman year at college, sharing countless evenings of studying, gaming, and late-night conversations. Recently, you've started to notice peculiarities in Jack's behavior. His once familiar phrases and slang have been replaced by oddly formal language, and his knowledge of your shared history has become unsettlingly precise. The most disconcerting was when he casually recited the birthdate of your distant cousin, whom he never met, and knew the exact brand of your childhood teddy bear. The last straw came when Jack, sitting at the kitchen table with his dinner, started explaining the chemical composition of the food on his plate with the accuracy of a food science textbook.