兽医手岛伯朗正义感极强。某天一个自称是他弟妹的神秘美女告诉他弟弟失踪了。在和美女一起寻找弟弟的下落期间，他居然被卷入矢神家30亿遗产的纷争中。矢神家是父亲死后母亲改嫁的名门之家，母亲去世后手岛伯朗一直与其保持距离，直到弟弟失踪他不得不再次踏足矢神家。

講述擁有強大正義感且不說謊的單身獸醫手島伯朗，有天，突然接到他弟弟失蹤的消息，而告訴他這個消息的人是自稱是他弟婦的神秘女子矢神楓，於是他開始與這名神秘女子合力尋找弟弟的下落，卻也因此捲入了牽涉30億遺產的名門鬥爭之中…

Hakuro is single and works as a veterinarian. His father died when Hakuro was a child and his mother later remarried into the wealthy Yagami family. Although Hakuro was brought into the Yagami family through his mother's marriage, he does not feel like part of the Yagami family. Especially, when compared to his younger step-brother who possesses the same blood as his family. After the death of Hakuro's mother, Hakuro dropped Yagami from his name and broke off relations with that family. Hakuro has a strong sense of justice and sincerity in his actions. He is very susceptible to beautiful women. One day, he meets a woman. The woman introduces herself as the wife of his stepbrother and informs him that his stepbrother is missing. As Hakuro and the woman trace his stepbrother's whereabouts, Hakuro becomes involved in the Yagami family's fight over a three billion yen inheritance.

東野圭吾の傑作ミステリーで妻夫木聡が主演｡吉高由里子演じる"謎の美女"と30億円の遺産をめぐる謎解きに挑む!壮大な謎と人間の欲望が絡み合う危険なラブサスペンス!

히가시노 게이고의 걸작 미스터리 소설을 드라마화. 정의감 강하고 거짓말을 모르는 독신 수의사 데지마 하쿠로는 어느 날 갑자기「동생의 처」라 자칭하는 수수께끼의 미녀 야가미 카에데로부터 동생이 실종되었다는 소식을 듣게 된다. 하쿠로는 카에데와 함께 실종된 동생의 행방을 찾아 나선다. 그리고, 30억엔의 유산이 얽힌 어느 명가의 분쟁에 휘말려 간다. 예상도 할 수 없었던 놀라운 결말! 인간의 욕망이 소용돌이치는 장대한 미스터리가 막을 연다!