Sarah Koenig

To tell him they'd misidentified this girl, whoever she was.

That tidbit has always stayed with me.

Is that something a distraught teenager would do?

Or is that something a killer would do?

So many people back then, and now, have talked about Adnan's reaction to Hay's death.

That he was blank, or cried in heaving waves, or not at all, or that he seemed normal, or that he hid in the dark room in photography class, or stared at a picture of him and Hay in psychology class.

One teacher said he was tense and unresponsive when she gave him a hug, that a tick he had became more pronounced.

Another said he was so sad he was barely functioning.

The school nurse testified at Adnan's first trial that she thought he faked a catatonic state.

She wasn't allowed to testify in the second trial.

None of Adnan's friends saw anything strange in his behavior.

Besides, they said it was a strange time for everyone.

It was terrifying and sad.

They were all so young.

How are you supposed to react?

Interestingly, Jim Trainham, the former homicide detective we hired to review the investigation, immediately disregarded every single statement about Anand's reaction.

In terms of evaluating someone's guilt, he said, stuff like that is worthless.

He advised me to do the same.

Just toss it all out, he said.

Because it's subjective, it's hindsight, and also people tend to bend their memories to what they think police want to hear.