I think someone who came the night before put the pots in the refrigerator. Just being helpful during a tragic situation. What I can't figure out and I think is significant....why did he kill them the night his dad went to the hospital? I think his dad knew everything that had happened with the financial stuff. I also wonder if his dad essentially ordered the hit on Paul and Maggie and Alex wanted him to know that it was done before he passed. Completely speculating here but something about the way the father/grandfather was just gives me that vibe. Completely my random opinion