Franchise: Columbo of Shinano

Columbo of Shinano - Dead Person's Echo
Columbo of Shinano 2 - The Togakushi Legend Murder Case
Columbo of Shinano 3 - The Hokkoku Kaido Murder Case
Columbo of Shinano 4 - The Karuizawa Forked Road Murder Case
Columbo of Shinano 5 - The 'Shinano Country' Murder Case