I’m going to post a warning at the top of this review. Because something crucial happens in this episode that alters plenty, so if you don’t want to spoil your enjoyment of that reveal then stop reading now.

For those still onboard, what an amazing episode! While I enjoyed the last few stories, they seem to be loading chambers, but for what? Ourselves Alone, is one of the darkest Terminator stories we’d yet seen, and gets to the very heart of what this series is really all about. The darkness that lies in every person’s (and robot’s) heart.

Derek has run a dual existence for some time, where he hasn’t told Sarah and John about the existence of Jesse, and she in turn hasn’t revealed to him her connection to Riley. And now all those things start to converge, like trucks on an interstate without brakes. And if that wasn’t enough, there’s another element, a hangover from the season one finale, where Cameron is damaged. She isn’t fully fixed, and possibly she’s returning to factory settings.

The opening scene shows her trying to get a pigeon that’s nesting in the chimney out of the house. She catches it and then takes it outside to release it. Except, when she goes to let it go she kills it unintentionally. Her hand seems to be making its own choices, and it’s in pigeon killing mode. Creepy.