Murder? Revenge? TIME TRAVEL? Jordan finishes an entire kdrama, and that should tell you exactly how good Marry My Husband is (and it's available on Amazon Prime!) Imagine: Girl gets cancer. Husband is unsupportive. All is going wrong in the world. Comes home to find husband and best friend cheating. Is murdered. Comes back 10 years earlier for the chance to have it all go differently. Ooh, sign me up.

https://www.amazon.com/Marry-My-Husband-Season-1/dp/B0CPYQKXW5

If you want something similar, Jordan recommends "The Glory" on Netflix, or "Perfect Mariage Revenge" on Viki.