Tokumei Kakarichou Tadano Hitoshi Returns 2004 (Japan), also known as Tokumei Kakarichou Tadano Hitoshi, Hitoshi Tadano, the Extraordinary Assistant Manager Returns , is Japan drama premiere on Dec 22, 2004 on TV Asahi
Normally, Tadano is an ordinary salaryman with a bookworm's look. But, he has his own secret. Behind his nerd's look, actually, he's a special mission chief. His job is to investigate the company's employee that has been suspected stealing company's money or selling company's top secret to the outsider.