| A to Z Mysteries | 背ラベル （1段目は全てRY837） |
YLレベル | ||||
| シリーズ名 | 題名 | 2段目 | 3段目 | レベル | 言語数 | |
| 1 | A to Z Mysteries | The Absent Author | ATZ | 0001 | 3.5 | 8517 |
| 2 | The Bald Bandit | ATZ | 0002 | 3.3 | 6452 | |
| 3 | The Canary Caper | ATZ | 0003 | 3.5 | 8262 | |
| 4 | The Deadly Dungeon | ATZ | 0004 | 3.5 | 8245 | |
| 5 | The Empty Envelope | ATZ | 0005 | 3.2 | 6612 | |
| 6 | The Falcon's Feathers | ATZ | 0006 | 3.5 | 7137 | |
| 7 | The Goose's Gold | ATZ | 0007 | 3.5 | 7216 | |
| 8 | The Haunted Hotel | ATZ | 0008 | 3.4 | 8016 | |
| 9 | The Invisible Island | ATZ | 0009 | 3.6 | 8518 | |
| 10 | The Jaguar's Jewel | ATZ | 0010 | 3.5 | 8550 | |
| 11 | The Kidnapped King | ATZ | 0011 | 3.4 | 8509 | |
| 12 | The Lucky Lottery | ATZ | 0012 | 3.4 | 8354 | |
| 13 | The Missing Mummy | ATZ | 0013 | 3.4 | 7537 | |
| 14 | The Ninth Nugget | ATZ | 0014 | 3.5 | 9528 | |
| 15 | The Orange Outlaw | ATZ | 0015 | 3.5 | 8793 | |
| 16 | The Panda Puzzle | ATZ | 0016 | 3.5 | 8471 | |
| 17 | The Quicksand Question | ATZ | 0017 | 3.3 | 9333 | |
| 18 | The Runaway Racehorse | ATZ | 0018 | 3.5 | 8277 | |
| 19 | The School Skeleton | ATZ | 0019 | 3.5 | 8343 | |
| 20 | The Talking T.Rex | ATZ | 0020 | 3.5 | 9976 | |
| 21 | The Unwilling Umpire | ATZ | 0021 | 3.5 | 9108 | |
| 22 | The Vampire's Vacation | ATZ | 0022 | 3.1 | 8500 | |
| 23 | The White Wolf | ATZ | 0023 | 3.2 | 9006 | |
| 24 | The X'ed-Out X-Ray | ATZ | 0024 | 3.5 | 8793 | |
| 25 | The Yellow Yacht | ATZ | 0025 | 3.5 | 8632 | |
| 26 | The Zombie Zone | ATZ | 0026 | 3.1 | 8662 | |
| 27 | Detective Camp | ATZ | 0027 | 3.3 | 11319 | |