犬神制药创始人犬神佐兵卫（仲代达矢 饰）生前留下一封足以引发家人互相残杀的离奇遗书，名侦探金田一耕助（石坂浩二 饰）受邀前来调查。

　　遗书将家产留给佐兵卫养女珠世（松岛菜菜子 饰），但她须同犬神家三个孙子中的一个结婚方可继承。长孙佐清（尾上菊之助　饰）早年与珠世互相倾慕，二战中佐清容貌被毁，终日戴着面具示人，因而其真实身份倍遭猜疑。佐武（葛山信吾 饰）和佐智（池内万作 饰）则向珠世展开感情攻势，但皆遭到无情残杀。

　　金田一从多方入手，渐渐发现伴随犬神家辉煌创业史背后诸多不为人知的秘密，这一切与当下发生的杀人案有着千丝万缕的关系……

Inugami Sahei, who built up the wealth of the Inugami Clan, passes away, leaving a will with Furudate, his legal adviser, for his daughters Matsuko, Takeko and Umeko, all of whom have different mothers, and for their sons, as well as for Nonomiya Tamayo, the granddaughter of a person to whom Sahei feels heavily indebted. The will states that all his assets are inherited by Tamayo alone, on the condition that she marries one of the sons of the daughters. Furudate's assistant learns the content of the will, and seeks advice from Kindaichi Kosuke, a private detective, as he senses the air of unease. Shortly afterwards, murders start to occur one after another in the clan.

信州の犬神財閥の創始者である犬神佐兵衛（仲代達矢）は、腹違いの3人の娘とその息子たち、佐兵衛の大恩人の孫娘、野々宮珠世（松嶋菜々子）らを残してこの世を去る。巨額の遺産が一族の争いの元凶となることを予期した法律事務所の若林は金田一耕助（石坂浩二）に調査を依頼するが、ほどなく一族間で次々と殺人事件が発生する。

2006년에 개봉한 '이누가미 일족(1976)'의 리메이크 영화. 76년작을 만든 감독 이치카와 콘과 배우 이시카와 코지가 다시 제작, 출연했다. 노노미야 다마요 역에는 마츠시마 나나코가 출연했다. 76년작과 거의 차이가 없으며 오히려 밋밋해졌다는 평가를 받으며 혹평을 받았다.

El extraño testamento dejado por el patriarca de la familia Inugami revela una retorcida trama de relaciones y desencadena cuatro muertes y varios otros intentos de asesinato.