For Lela White, a Houston sleep lab technician, sleep doesn't come easy-there's a price to be paid for a poor night's sleep, and she's the judge, jury, and executioner. Everyone around Lela considers her a private woman with a passion for her lab work. But nighttime reveals her for what she is: a woman on a critical secret mission. Lela lives in the grip of a mental disorder that compels her to break into astronauts' homes to ensure they can sleep...