Best part of the episode was seeing different juvenile forms of the Xeno.
The worst part was the lack of security/staffing/protocols/etc, but then that may have been explained away by Kirsh at the end. Maybe. Could be a swerve or misdirect. If he really is a synth (could he maybe be a cyborg out for revenge against Kavalier), why would he betray Prodigy? It doesn't seem like money would be an answer.
Why in the world would Dame Sylvia let Wendy talk to Nibs immediately after erasing her memory? Is it just because the plot wanted Wendy to figure out that she needed to get away from Prodigy? I wonder if Dame Sylvia wants Wendy to leave, just like her husband Arthur.
And speaking of Arthur Sylvia, nice job buddy! We can understand that Tootles would screw up the lab integrity, since he really is just a kid after all. But a smart guy like Arthur really should have known better, he should have been slamming every single alarm klaxon he could find. Especially after wising up and trying to get Joe and Wendy off the island. Maybe he used all his brains for that, and had none left. We clearly saw a video monitor showing Tootles lying on the floor while Joe and Arthur were having their conversation, but instead of looking at the live video feed of the lab to see if Tootles was there, he had to go down and look in person.
I'm sure you all noticed that when he finally picked up the phone at the end to call for help, it was very old-school-looking and corded. The design and aesthetics of this show are definitely a choice. Related to the posts in this thread over the past few days about travel times and technology and the like, I wonder if stuff like a corded phone and ridiculously old school computer monitors are a bit of a message to the viewers to not sweat the minute details and the canon and other technological questions. This show called Alien Earth actually takes place on an alien earth, not an earth we can immediately recognize.