As its name suggests, this is a detective game and... a beat 'em up?! That's an odd combination. This game became obscure, which is rather unfortunate because it's actually a milestone in the genre: it features a huge amount of destructible background objects that hasn't been matched before or since.
|According to its name, this short track was meant to play during the Continue countdown. In the actual game, the stage music keeps playing instead.
|0E STAGE START
|This was meant to play at the start of the stages, as the name indicates.
|28 ENEMY DAMAGE
|The name of this sound indicates it was meant to be the defeat sound for enemies. In the actual game, a different sound is used for that: 26 BOSS DAMAGE, which its name implies that it was meant for the bosses instead.
Also, while not unused, the music that plays on the title screen when inserting a coin is labeled as 09 BONUS STAGE, which indicates that it was originally intended for a bonus stage, which the actual game doesn't have any.