Plot hole: The girl disappeared from the RV. The RV is a crime scene - it should have been taped off, finger printed, and searched for trace evidence with luminol and a forensic light source. There is no crime scene (forensic) unit present on the scene. However, the parents are sitting in the RV waiting for the cops to contact them about their missing child. (00:19:00 - 00:20:00)
The Vanished (2020)
1 plot hole - chronological order
Directed by: Peter Facinelli
Starring: Thomas Jane, Jason Patric, Anne Heche, Alex Haydon
Other mistake: An aerial shot of the woods is green instead of showing Fall foliage. When they are leaving, there's just as much - if not more - green leaves on trees than when they got there and it is after Thanksgiving (late November when there should be Autumn foliage, if any, on the trees). (00:18:29 - 01:24:13)