Eleven-year-old Sam Brattle is already having the worst Christmas ever - his dad's bakery is going bankrupt and his mom is spending the holidays with her new family. To make things worse, Nickel Bay Nick, the anonymous Good Samaritan who leaves hundred-dollar bills around Nickel Bay at Christmastime, is a no-show, so this year the rest of the town is as miserable as Sam. When he stumbles upon the secret identity of this mysterious do-gooder, Sam is stunned to learn that he might now be his town's only hope. But before he can rescue Nickel Bay, Sam has to learn the skills of a spy and unravel some even darker secrets that will change his life forever.

Originally published: 2013.

Machine generated contents note: 1. The Stranger in The Photograph -- 2. The Monster In The Window -- 3. The Weirdo On The Corner -- 4. The Secret In The Envelope -- 5. The High Cost Of Falling -- 6. The Big Threat Of Blackmail -- 7. The Surprise In The Song -- 8. The History Of A Mystery -- 9. The Monkey Around My Neck -- 10. The Wishes In The Jar -- 11. The Benjamins In The Backpack -- 12. The Return Of A Legend -- 13. The Sound Of Celebration -- 14. The Challenges Of Carjacking -- 15. The Bad News Of Bookkeeping -- 16. The Close Call By The Bay -- 17. The Place I'm Not Welcome -- 18. The Bucks In The Box -- 19. The Key And The Cage -- 20. The End Of The Line -- 21. The Code And The Cupcakes -- 22. The Mix-Up At The Mall -- 23. The Clue In The Coat -- 24. The Christmas in the Kitchen.