“Which would require having access to such a place and feeling confident what you’re doing wouldn’t be discovered.” I lead her down the path she’s already on.

“Isn’t it true that mummification in a closed structure that’s hot and dry could occur in as few as eleven days?” She lets me know what I’ve by now deduced is her theory. “What if the person installed a sauna in his basement? Couldn’t that work?”

“You mean the way Marino did?”

“Yes,” she says. “The way he did when he bought his house this past summer.”

“You mean the sauna he built from a kit that can fit one person sitting up on a bench not much wider than a toilet seat?”

The shower stall is the same tile, and bars of soap are dried out, and nothing looks recently used. I open the mirrored medicine cabinet door over the marble shell pedestal sink, the handles and fittings malachite and bronze.

“That rather horrible little sweatbox that looks like a Porta-John?” I ask.

She has more night guards, each from the same West Palm Beach dentist.

“A sauna that’s on a sixty-minute timer so one is constantly having to reset it?” I continue, and Burke is silent in the doorway.

I pick up prescription bottles, more muscle relaxers, Flexeril, Norflex, and the anti-inflammatory drugs Vioxx and Celebrex. She was taking the antidepressant nortriptyline, all of the medications prescribed by this dentist, Dr. Pulling, and consistent with treatments for the temporomandibular joint and muscle disorder known as TMJ.

She had a bad case of it. She would have suffered chronic pain. She was in a vortex of getting dental work done to relieve a wretched condition that can cause the jaw to lock or dislocate and the ears to ring and a constant ache that radiates down the neck and shoulders and debilitates.

“So I guess he dehydrated her slowly, running downstairs on the hour to reset the infrared heater, including last week, when he was out of town, in Florida?” I’m careful not to sound sarcastic. “And by the way, that kit he bought because he thought it would help him lose weight would mean the body was propped up in a sitting position.”

I walk out of the bedroom.

“She would have desiccated, dried out in that position.” I keep talking as I go down the stairs and Burke is behind me. “And if the body was straightened, such as by weights or floats pulling on it when it was tethered in the water? Tension at the joints and the skin’s going to split. She has no skin splitting, and her core body temperature was colder than the bay, which isn’t possible unless the body was refrigerated, possibly frozen.”