This review reportedly contains spoilers. I can handle the truth.
Bit long, but didn't quite feel too long.
I think the thing that impressed me most about this film is how the trailer seemed to spoil it completely by hinting at the twist, but actually just hinted at the false twist, keeping the real twist hidden.
I also liked how it sneakily had her in the film visualise her dead body sinking in the water, so that the trailer was able to use a clip of her seemingly dead body…