The Visit (2015)

Plot hole: When they left the camera out overnight to film Nana it would have had to be recording all night. A DSLR will not do this and does not do motion detection either.

Mom: Those aren't your grandparents.

Trivia: While the film was always meant to be something of a horror-comedy, director M. Night Shyamalan supervised three versions of the film during editing- one played mostly for horror with little comedy, one played mostly for comedy with the horror downplayed, and one that tried to balance both tones equally. The version that balanced horror and comedy equally is the final version released in theaters.

Question: Why did Nana jumpscare the camera? Also, why did she have some sort of seizure when asked about Loretta?