Insidious: The Last Key (2018)

Continuity mistake: When Elise flees her house when she's 16, Christian follows behind her, calling for her. Suddenly, as Christian reaches the bottom of the stairway outside, their father Gerald appears right behind him. This is impossible... Gerald was nowhere to be seen in the previous few shots of the stairway, and furthermore, it was shown that he was walking with a cane and moved slowly as a result, so he wouldn't have been able to catch up to them that quickly. He just sort of... magically appears.

TedStixon

Trivia: The town in which the film takes place is briefly mentioned to be called "Five Keys." Which is a bit interesting, as the villain is a demon who has keys emitting from his finger tips, thus literally having "five keys" per hand.

TedStixon