オープニングテーマ「starting the case: Rail Zeppelin」を含め、梶浦由記が手掛ける珠玉の楽曲を全43曲収録。
❈ 収録曲
●DISC1 01. starting the case: Rail Zeppelin 02. nervous talk 03. an excellent student 04. deep in thought 05. the matter is settled, anyway 06. well-disciplined classrooms 07. it was naff 08. someone pulling the strings 09. talking about nothing 10. chasing the enigma 11. sullenly 12. you were my king 13. the clock tower 14. a noisy student 15. I'm so useless... 16. I have found something 17. a small happy ending 18. he's always serious, not kidding 19. let us play a game 20. waving goodbye 21. an inspection of the scene 22. a quiet and restless place ●DISC2 01. we call him heartless 02. searching for the solution 03. an ominous premonition 04. an anxious bird 05. the culprit is you 06. bossy people 07. facing with the enemy 08. now, ladies and gentlemen 09. an evil design 10. a mighty enemy appears 11. the Rail Zeppelin 12. they are magicians 13. let the sadness knock my door 14. the magic power 15. out of control 16. no time left to win 17. deep in old grief 18. depressed and tired 19. the decision to keep going 20. tender smile, gentle feeling 21. closing the case ※仕様・収録内容は告知なく変更になる場合がございます。