This is a set that started in 2006 and is set five years after the death of their Nancy's mother.

1. Sleepover Sleuths
2. Scream for Ice Cream
3. Pony Problems
4. The Cinderella Ballet Mystery
5. Case of the Sneaky Snowman
6. Fashion Disaster
7. The Circus Scare
8. Lights, Camera...Cats!
9. The Halloween Hoax
10. Ticket Trouble
11. Ski School Sneak
12. Valentine's Day Secret
13. Chick-napped!
14. The Zoo Crew
15. Mall Madness
16. Thanksgiving Thief
17. Wedding Day Disaster
18. Earth Day Escapade
19. April Fool's Day
20. Treasure Trouble
21. Double Take
22. Unicorn Uproar
23. Babysitting Bandit
24. Princess Mix-Up Mystery
25. Buggy Breakout
26. Camp Creepy
27. Cat Burglar Caper
28. Time Thief
29. Designed For Disaster
30. Dance Off
31. The Make-a-Pet Mystery
32. Cape Mermaid Mystery
33. The Pumpkin Patch Puzzle
34. Cupcake Chaos
35. Cooking Camp Disaster
36. The Secret of the Scarecrow