Who's the Killer in Somewhere Between?

We've also finally learned the identity of the blonde man in the picture – the one who's kidnapped Serena. Turns out this supposedly dead man – a “ghost” as the military calls them – is not actually the killer after all. It's his adopted brother – the biological son of the governor – who's the real killer.

Did Nico kill Susanna in somewhere between?

Neither Danny nor Nico Killed Susanna.

Did Serena die in somewhere between?

The show, instead, wrapped the story up in a neat little bow, letting us have our complete happy ending with Danny, Serena, and Nico still alive.