Little Evil (2017)

Newlywed is doing his best to bond with his stepson, but it isn't going well. Mainly because he's pretty sure the kid is the antichrist. This is a silly comedy, but it still could've been done a lot better: giving the kid's mother a bit more to do other than being hot and dumb would've been a decent start.  The best bits were with the members of the stepfather therapy group, who took the antichrist's behavior in stride since their own stepchildren's behaviors often seemed comparable.

But this boils down to nature vs. nurture -- even in the case of an actual spawn of satan -- and that's already been covered ably in Good Omens.

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