Theory of 'child kidnapper killer' motives after 1x7 ending (spoilers for 1x7)

Disclaimer

I'm not saying that this is how the Captain's plans will play out but it is how he hopes it to turn out.

What if the first kill with the judge's kid was just to set up steaks for the Captain's kid. His plan is that he lets his kid escape but makes it look like the kid just got lucky by some miracle. He then makes his kid's stepdad look bad, blaming him for the reason that his kid got abducted because he wasn't there to protect them and convinces his ex-wife to leave the stepdad and bring the family back together.

ps. my mate (Notserp.cc) recons the captain will plant evidence on the stepdad to frame him and try to convince his ex-wife to bring the family back together by proving that he is better than the stepdad.