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.
石坂浩二
as Kosuke Kindaichi
松嶋菜々子
as Tamayo Nonomiya
五代目 尾上菊之助
as Sukekiyo Inugami
富司純子
as Matsuko Inugami
松坂慶子
as Takeko Inugami
萬田久子
as Umeko Inugami
葛山信吾
as Suketake Inugami
池内万作
as Suketomo Inugami
永澤俊矢
as Saruzo
石倉三郎
as Fujisaki Kanshiki-ka-in
三條美紀
as Osono
三谷幸喜
as Nasu Hoteru Shujin
