This episode, as some of the previous ones, seems to be very close to "The Mentalist".
Cal Lightman leads the investigation. Micro-expression analysis is no longer centrical to the plot-solving. Instead, basic psychology and common sense are used, as Ria Torres and Eli Lokerput it at the end:
It's common sense dressed up, so people want to pay for it. [...]
It sounds like Lightman. "
On top of that, the scenario looks pretty much close to "The Mentalist" "The Blood On His Hands" episode, with a cult-like leader going rogue.
Fortunately, Tim Roth excels as an actor and is even going better at each episode. He's the key and centre of this series.
I hope next episode to bring plots he deserves.