“That’s impossible, right? If he was your father’s son, don’t you think your father would have said something about it?”

His eyes fluttered. “Robb had a lot of secrets, many of which he carried to the grave. I have thought and thought about it for the past weeks. I thought back to when we were little, and I thought of us as adults. Up til a few years ago, Robb preferred Elliott. He treated him like a son and loved him more than his children. That was where I missed it. He didn’t treat Elliott like his son. Elliott was his son.”

Mia gasped. It made sense. The puzzle was...