Could Hilary Swank and Walter be connected?

The more I sit and think about Walter and his involvement in everything the more suspicious of him I become. He just happened to pop up in Misty’s life when everything began to go to shit for the adults and chaos was ensuing. I’ve seen a lot of theories as to what Hilary Swanks role could be, the biggest and most popular one being she is adult Melissa. I don’t think that’s the case, but I do think she comes into play in the adult timeline somehow. Is it possible that Walter is tied to her in some way? I have speculated that maybe Walter is collecting info on the adults for someone else who for one reason or another wants intel on the women. Walter is a pro Citizen Detective, him doing recon for someone else isn’t the craziest idea I’ve ever heard when it comes to this show. There’s a shot of Hilary Swank in the trailer saying “you really are insane” to someone, and I don’t think it’s Misty, everyone knows she’s crazy so that would be too obvious in my opinion. What if it’s Walter? Maybe when he started collecting the information he was 100% on board but the more he got to know Misty and the other women he began to change his mind and in turn wanted to protect them so he goes against this person instead of continuing to help them.