explaining the movie
Henry Hearst loves his wife, and wants to believe that she still loves him. He admits early in the film, people resent a "normal" person being rich and having such a beautiful wife. He himself is a normal person and as such, has great concern that he will lose his beautiful wife. As a lawyer, he is not overly concerned about her taking his wealth. As a man, he is concerned about her taking away her love forever. In his heart, he believes (or at least, hopes) she will return to him eventually.
Henry’s evasive answers and inconsistencies are his attempts to cover up his dysfunctional home life. In the course of the night’s interrogation, Capt. Victor Benezet reveals all the case details.
Chantal Hearst believes her husband is a pedophile, as evidenced with the scene with her niece.
Victor implies that Chantal led them to the photographs, offering them as evidence. Chantal really does believe him guilty. Thus, their love is truly dead. Why continue the charade?
What breaks Henry is when he realizes that Chantal is convinced of his guilt.