>> and he sits in a chair, and he proceeds to sit in this chair for over 10 hours. >> let's do this. let's step out. we're going to give you a minute. >> i'm fine. >> doesn't shift, doesn't move, doesn't stand up. >> no bathroom breaks, nothing? >> we begged him to take bathroom breaks. we begged to bring him food. >> brought you that, i don't know if you want it or not. >> i'm all right. >> you need anything else, jason? >> well, what's that about? >> he's gonna stay here until we believe him. >> reporter: he admitted to being unfaithful, but said it was ludicrous to think he'd killed his mother. >> i never hurt my mom. if you wanna hold those affairs against me, that's fine, but i never -- >> this isn't about an affair. >> i never hurt my mom. i walked in and found my mom the way she was. >> this is about shirley being killed. >> i know that, and you're not doing anything about it because whoever did kill her, is still out there! >> reporter: he headed home, but a cloud of suspicion hung over