How to Spell Revenge (2018)

Danny, a beleaguered banker, wonders wether his relationship with Sheila, his career-minded girlfriend, will stand the test of time. A chance encounter with a new female leads to a steamy night on the town, and evokes Sheila's wrath. Trepidatiously, she's led down the unknown rabbit hole of witchcraft and ultimately to a little book, which helps her control and manipulate the man she loves.