Watch It's a Wonderful Knife (2023) online

It's a Wonderful Knife is a 2023 Christmas comedy-horror film, written by Michael Kennedy, directed by Tyler MacIntyre and starring Jane Widdop, Joel McHale, Katharine Isabelle and Justin Long.
The film is a spin on the Christmas classic It's a Wonderful Life; however, instead of the lead character recognizing his previous good deeds, the character Winnie discovers how many deaths she has prevented in her town.
Winnie Carruthers saved her town, the idyllic Angel Falls, from a psychotic killer on Christmas Eve one year previously, but after wishing she had never been born, she finds herself in an alternate universe in which she doesn't exist, allowing the killer to roam free.