If anyone knows the film, please let me know.

Hello folks

I watched a movie on Prime Video in 2019/2020.

Unfortunately, I've been looking for this film ever since and haven't been able to find it.

I can only remember a little bit about it. Here's what happened. (This is where it gets a little complicated.) In the film, a man was looking for his missing son, and the trail led him to a deserted island.

A couple and a woman were visiting this island. The couple had been together for several years. At the end of the film, the woman who was with the man found out that her friend was three months pregnant with her boyfriend, and the two were chatting about how to tell her. She then climbed the stairs of an unstable tower. The other two followed her. The tower collapsed, and her husband and her affair both died.

But the woman survived because she was at the very top.

On this island a child died all alone, and the spirit of the child stayed with the woman and the woman later died too and so the woman and the child were there together alone as ghosts

(to the ghost child, boy)

His father was an alcoholic and always burned Christian crosses into his skin. There were also children who always annoyed him, and later, when these children were older, they all died with crosses on their bodies.

The man who was looking for his child also found his child on this island dead in a blue barrel. Later he and the police also found the easy ones from the affairs.

If I remember correctly, it was a Russian-language film

I hope it was somewhat understandable, but I can't find the film at all and I think it started with O