プロテニスの花形選手だったトニー・ウェンディスは、資産家である妻のマーゴとロンドンのアパートに住んでいる。トニーはテニスのツアーのために自宅を留守にしがちだったので、それが不満だったマーゴとの夫婦仲は冷え込んでいた。夫の留守中にアメリカ人の推理作家マーク・ハリディとの浮気に走ったマーゴは、トニーと別れてマークと一緒になる気持ちに傾いていた。妻の浮気に気づいたトニーは、妻と別れるよりも、妻を殺害して資産を手に入れようと考え、緻密な殺害計画を練り上げる。

A wealthy lord dies and is entombed with a valuable deposit of jewels. Seven keys are required to unlock the tomb and get hold of the treasure. A mad doctor uses an iron maiden to systematically eliminate the heirs to the fortune.

While her husband is away, Bluebeard's seventh wife sets out to discover all the secrets hidden in the castle using the keys he has given her. But she fails to see that by doing so she will be instrumental in creating a series of tragic events.

A powerful, emotional and sometimes humorous look at the daily life of a prison inmate and a corrections officer.

Separated a few months ago from Pedro, Matías invites Lucho to his house. But what seems to start fine will turn the tide when the past of Matías and Pedro’s relationship arrises in the form of the keys...