The acting...
Although I'm not enjoying this one as much as the first series, I admit that some of the acting in this series impresses me.
Particularly, Benjamin Evan Ainsworth as Miles. He's able to project evil adult cunning and tormented boy in a manner way beyond other child actors that you typically see. The scene he shares with Oliver Jackson-Cohen when Peter tries to convince Miles to let him permanently inhabit his body had me teary eyed.
Victoria Pedretti as Dani... all screaming, quivering lips and darting eyes, and Henry Thomas with his overly enunciated British accent are the weakest actors. They are both American compared to the rest of the British cast. Not sure if that is significant.
Some of the strongest writing shows up in the monologues. Owen's tribute to his mother during the funeral episode, and Jamie's sad tale of growing up gay in a coal mining community were particular standouts.