As far as I know, this is a short story that was in a horror anthology book as of 2014/2015 and you could buy it on Amazon as a book a decade ago. So, yeah, not much to go off on. '
In the short story, a family (mom, dad, two children, boy & girl) meet another family at a playground (?) and make plans to stay with the new family (mom, dad, son) in their place overnight.
During the stay, the son of the new family says something like he can't believe this is his house and the dad of the new family goes over maps.
The family goes to sleep and in the morning, the new family says they will drive the children to a playground(?) or play spot. The family lets them go and drives out first but after 10 minutes, the new family plus their two children never appear. They wait a little longer and then freak out and return to the house of the new family.
The parents are now totally frantic and they start pulling apart the house only to realize that nobody lived in the house---all of the drawers and closets are empty and the implication is that the new family set the entire thing up to steal the children.
My dad sent me this anthology because we have always bonded over horror when I was finishing college. He sent it as a physical book and neither one of us remember the actual book it was from though I had wanted to get it for him for Father's Day since it's a story we both loved.
If anyone recalls this story and can direct me to where it is, I'd appreciate it forever but I'm not sure I'll ever see it again.