all, and he understood what was necessary to help them sort out what happened. >> i can't even start to imagine what you're going through, okay? just, you know, it's a death investigation, and we have to do this. >> happy to help, he said. whatever would get him back home to comfort his daughters as quickly as possible. >> we're all so close. >> chris told investigators what happened. how, as courtney slept, he and cristi were in the spa bathing. >> she got out, went in, went to the bathroom, got some more coffee, tried to wake up courtney. courtney didn't wake up, apparently. she came back out. >> as cristi returned to the spa, said chris, they passed each other on the patio. he went in the house, stopped by courtney's room to make sure she was awake, then went right back outside and saw his wife floating face down in the spa.