“And you said things were difficult between you afterward?” I asked.

She nodded as she put away the picture. “Rod changed. I mean — to be fair, we both changed. But he just got so … paranoid. And so angry, angry, angry. I think on some level, he blamed himself. Like he never got to be the doctor who could save his own son, you know? But on the outside, he blamed everyone else.”

“And when you say everyone —”

“I mean everyone,” she answered. “The doctors, the hospital, the whole messed-up healthcare system. We didn’t have any insurance at the time, so you can imagine. If you’d asked him then, he probably would have said it was the system’s fault that Zach got sick in the first place.”

Molly stopped suddenly and turned to me, as if something had just occurred to her. “What’s he done, anyway? Is Rod in some kind of trouble?” she asked.

I’d been gauging her carefully the whole time, trying to figure out how much was too much to say here. I didn’t want to leave without getting everything I could, so I went ahead and took a calculated risk.

“Molly, I told you before that Rodney’s been in Washington for the last three years. But what I didn’t say was that he’s been working at the Branaff School for most of that time.”

She looked at me blankly. Apparently, the name didn’t mean anything to her.

“It’s where Zoe and Ethan Coyle are enrolled. It’s where the kidnapping occurred.”

“Wait,” she said. “Are you saying Rod’s a suspect in that kidnapping?”

“Technically, anyone who works at the school is on our list,” I said. It was the kind of answer I had to give, but she understood perfectly.

Now her whole demeanor changed. Suddenly she seemed twice as shaky and nervous as before. Her hand treaded back up to the crucifix and her eyebrows knitted together.

“I just can’t believe that. No. I mean … he couldn’t possibly … could he?”

“I don’t know, Molly,” I said quietly. “Could he?”

It took her a long time to answer. She bowed her head and closed her eyes for several seconds. Her fingers were all over the cross and I wondered if she was saying a prayer. And also if she was involved herself.

When she looked up again, she was trembling all over.

“There’s something I have to tell you,” she said. “Maybe something important.”

“IT WAS A few months after Zachary died,” Molly Johnson started in. “Things had gotten pretty awful between me and Rod. But then one night, out of the blue, he came home and said he wanted us to go for a drive.”

She was still staring off into the distance, not really focusing on anything — except maybe the memory of that night. We’d obviously opened some kind of Pandora’s box. I kept my mouth shut for the time being and just listened to her.