Bob thought Alex was stupid and wouldn’t know what he did. Alex saw the entire thing without Bob ever knowing about it. He saw Deonna and as soon as Bob took her away, Alex knew he wasn’t going to kill her. He followed them and watched as Bob took her into the woods; he didn’t go in the woods with them, but he knew Bob would have to reemerge eventually. Once Bob reemerged, he came out with a woman wearing a headscarf; right away Alex knew that had to be Deonna. He was stupid; Bob took her back to the house and their father. Alex, of course, followed them home and overheard their entire stupid plan about hiding her in the dungeon and taking Mateo out of the kingdom. They were ridiculous to think that a plan like that would ever work. Marlon also expressed how he didn’t trust Alex which