CHAPTER ONE
Mr. Lynch Makes a Discovery
CHAPTER TWO
Miss Pickerell's Cow
CHAPTER THREE
A Change in Plans
CHAPTER FOUR
Miss Pickerell Goes Ashore
CHAPTER FIVE
Trouble about Tickets
CHAPTER SIX
What to Do?
CHAPTER SEVEN
Something Is the Matter with the Sheriff
CHAPTER EIGHT
A Mysterious Disappearance
CHAPTER NINE
The New Deputy Sheriff
CHAPTER TEN
The Sheriff's Geiger Counter
CHAPTER ELEVEN
Trouble at the Atomic-energy Experiment Station
CHAPTER TWELVE
Professor Perkins Explains
CHAPTER THIRTEEN
The Sheriff's Secret Ambition
CHAPTER FOURTEEN
An Incredible Discovery
CHAPTER FIFTEEN
The Sheriff Has to Help
CHAPTER SIXTEEN
Stop! In the Name of the Law!
