A Deadly Grudge Long lost sister. Newfound grudge. Family dynamics take a messy turn when a woman learns she has a half sister at her mother's funeral. As her perfect life starts to unravel, she suspects her new sister is to blame for her Mom's death. Details Casts Videos Galleries Posters Title A Deadly Grudge Release Date 2021-12-31 Runtime 01 Hours 25 Minutes Genres Thriller TV Movie Drama Production Companies Headlong Entertainment, ASG Films, Benattar/Thomas Productions Production Countries United States of America Annika Foster... Lindsey... Aubrey Reynolds... Sarah... Patrick M.J. Finerty... Jim... Jonathan Stoddard... Gavin... Timothy Grassi... Detective Gomez... Michelle Holland... Annie... Cameron Gilliam... Balley... Lauren McCullough... Tailor... Michael A. Klucher... Mourner... Warren McCullough... Preacher... Official Trailer (Trailer) Original Size (3840x2160) Original Size (2880x1620) Original Size (1920x1080) Original Size (1600x2400) Original Size (1000x1476) Original Size (2000x3000)