I love me a dual timeline, what can I say? And on audio, this one SLAPPED. Both of the narrators had such distinct voices for their characters that there was never any confusion for me as to which timeline I was in. Plus it's a mystery that toes the line of thriller, mixing cold cases, missing persons, and serial killers. You get paranormal elements as well, which left me questioning at times if people we were interacting with were actually ghosts! While I do still have some burning questions, I loved the writing style, the pace, pretty much everything. Wow wow wow!