Attorney Sahara (Masakazu Tamura) works as a public defender. Sahara keeps fighting for the truth regardless of money. He stands stands up for the weak without having regard for his own safety. Junko Tanaka is the younger sister of Sawara's deceased wife. She supports Sahara and his daughter financially and emotionally. Sahara's only daughter is Tsuruko. She is a member of an international volunteer doctor organization. Tsuruko is engaged with Kengo Sato (Tomomitsu Yamaguchi). Sahara works with Kenji Tsuruoka (Yoshimasa Kondo) & Hiroshi Tomita (Toshinobu Matsuo) at his law firm.
Then one day, a married woman is accused of killing her husband who is the president of a major construction company. A mysterious woman interrupts the case, which is related to a world wide magnate. A powerful man in the financial world knows the secret of current government. Attorney Sahara must now step in to defend the woman accused of killing her husband...
かつて妻を依頼人に殺害された過去を持つ国選弁護人が主人公の作品。
2009年1月24日に同局で放映された松本清張原作のスペシャルドラマ『疑惑』の佐原弁護士を主人公に据え、清張の短編作品をベースとしたオリジナル脚本となっている。佐原を演じる田村正和とその義妹・純子を演じる真矢みきは『疑惑』から引き続いての出演である。
クランクインが2009年12月、クランクアップが2010年8月と、民放の1クールの連続ドラマとしては異例の制作日数が費やされた。