From Amazon Prime:

A chilling, psychological drama about jealousy, betrayal and revenge.  A married couple copes with an affair, but once betrayed, can you trust the one you love? Official Selection – Tribeca and Rotterdam International Film Festivals.

From Amazon Prime you can stream this 1 hour 35 minute feature film.

Julius Morlang,  a photographic artist, is played by Paul Freeman about whom the following is written in IMDB:

Probably one of Britain’s most underrated actors, Paul Freeman has accumulated literally hundreds of screen credits over several decades, most notably as the main villain in the Steven Spielberg classic Raiders of the Lost Ark (1981), and he has worked extensively in the theatre, but he has managed to avoid becoming a star or even a household name.

As a technique for telling the story,  the film sequencing  does the following;  Show a short scene. Let the story develop more. Return to that short scene but this time show the rest of what REALLY happened.  In an extreme way, the script really jumps back and forth in time.

From the beginning it would appear that Julius Morlang is just an emotionally repressed man who remains silent while refusing to communicate or even acknowledge his and his wife’s concerns.  But if you can stick with the film to the end you are In for a big surprise.  Perhaps I am slow, but I just did not see the truth until the end.  Do not stop watching until you see screen credits because there is another surprise waiting in addition to what you think is the big revelation.  To avoid a spoiler I purposely omitted some appropriate categories for the film.

Possibly slow, but well worth watching.