In the boomtown of Eden Springs, someone is spilling the blood of children. Desperate, the sheriff calls in ex-Union scout Aaron Byrne to stop them. For the lawman for hire, it's just another job-until he meets Jonah Mann, the town's Oxford-trained astronomer-cum-schoolteacher. Aaron never stays in one place for long, but a few stolen glances from the eccentric professor begin to test his resolve to move along once the job is done. Now a telescope, a whorehouse bathtub, and a cup of Chinese tea could change Aaron's own stars forever.