In 2019, it’s become unpopular for male directors to tell female stories, but McKee has always shown a deft and delicate hand with such material, long before “female-centric horror” was deemed worthy of buzz.

What starts out as a somewhat interesting meditation on mental illness and jealousy slowly devolves into a middling lifetime movie of the week as Caitlin Stasey's one-note performance literally takes down the entire narrative.

This is a film that focuses on the complications of female relationships and how dangerous jealousy, obsession and possession can be.

The characters are well rounded, and there are enough variations on the sub-genre's formula that keep it from feeling like a throwback, making it a fully engaging experience.