Is there actually any consistency in this series? Let's recap: In Paranormal Activity 3 (which takes place before the other films) we learn that the Grandma of the family is a bit of a bad apple and does the odd bit of devil worshiping and in the process likes to get young girls to do something not explicitly described but a strong implication of harboring demonic babies and or marrying demons
then forgetting the whole thing
quite why is never explained. Her own daughter either doesn't fulfill this role or did and its just a damn greedy demon.
At the end of the film the Grandma takes her grandchildren to do whatever it is she wants them to do. Then in the 1st and 2nd films we see that the demon now wants a boy in return for the wealth and power it allegedly provided to the Grandma despite her living in a distinctively average house and apparently choosing not to share her wealth with any of her descendants. Quite what the demon got from whatever happened at the end of the 3rd film isn't clear but by hook or crook the demon gets the boy at the end of the second film. Now it's something of a clumsy demon because by the 4th film it's lost the boy and he's been adopted; but it wants him back. You'd think after all that effort it would do a better job of holding onto it but still. So in summary we don't know what the demon actually wants a boy for, or two young girls. It is starting to sound rather dodgy now isn't it, I wouldn't let that script writer babysit, the Grandma appears to have got a bit of a raw deal and the demon prefers more difficult targets to possess (some of the time?) rather than just possessing some homeless person if a kidnapping is all that's required. Is any of that inaccurate?
At the end of the film the Grandma takes her grandchildren to do whatever it is she wants them to do. Then in the 1st and 2nd films we see that the demon now wants a boy in return for the wealth and power it allegedly provided to the Grandma despite her living in a distinctively average house and apparently choosing not to share her wealth with any of her descendants. Quite what the demon got from whatever happened at the end of the 3rd film isn't clear but by hook or crook the demon gets the boy at the end of the second film. Now it's something of a clumsy demon because by the 4th film it's lost the boy and he's been adopted; but it wants him back. You'd think after all that effort it would do a better job of holding onto it but still. So in summary we don't know what the demon actually wants a boy for, or two young girls. It is starting to sound rather dodgy now isn't it, I wouldn't let that script writer babysit, the Grandma appears to have got a bit of a raw deal and the demon prefers more difficult targets to possess (some of the time?) rather than just possessing some homeless person if a kidnapping is all that's required. Is any of that inaccurate?