Harry didn’t immediately say anything, and Caitlin felt bad about what she’d said. It had sounded callous, like she was the type of person who figured out who she owed and who she didn’t. She was about to apologize when Harry said, “I don’t know what to do or think.”

“Tell me about this other person your father was having an affair with.”

“Annie Callahan. I saw her at the police station. It was the day I found your sister. I was in the station all that morning, and I watched her being brought into one of the interview rooms to be questioned. She looked terrified, and when she was being led out of the station, she looked over at me where I was sitting and stared. I think it was because I look like my father.”

“How did you know it was her?”

“I just knew, somehow. Later, I asked Detective Dixon about it and he said that it was, and that they’d be questioning her husband as well, but he was out of town.”

“That sounds suspicious.”

“I don’t know. It doesn’t make sense to me that either of them had anything to do with what’s happened. It could be that Lou Callahan killed my father out of jealousy and anger, but why kill your sister?”

“I don’t know,” Caitlin said. They were both silent for a moment, Caitlin staring into the fireplace as though there was a fire in it. She found herself suddenly saying, “Do you know that the first time I ever saw the ocean was when I was fifteen years old?”

“Which ocean did you see?”

“The Atlantic. I’d gone to Washington, DC, for a school trip, then went to visit an aunt who lived in Ocean City, Maryland. She took me on a whale watch. And this is the first time I’ve been to Maine, even though I’ve been living in Boston since college.”

“Sorry that you had to come up here for the reason you did,” Harry said.

“Me too.”

“There’s a pretty walk right near here. Along the cliff. It’s actually where my father was killed.”

“Let’s go,” Caitlin said with mock enthusiasm. They both laughed.

“I’ve already been out there. Someone left a bouquet.”

“Where your father died?”

“Yeah, I guess. Maybe it had nothing to do with him, but . . . we can walk there if you like, I don’t mind. Even though it’s where my father died, it was still his favorite place.”

“Okay,” Caitlin said.