Based on an Agatha Christie novel, I felt like I was watching the story that "Knives Out" was based on (though Knives Out didn't credit "based on" or "inspired by"). There are A LOT of similarities - an investigator shows up to a wealthy mansion to question the family members regarding the death of the rich patriarch who may or may not have been murdered. It's the same setup and the scenes play out similarly.
Review of Crooked House
