This is the forth book of the series. I was a bit weary at the beginning as I thought it was going to be a boring continuation (like it was my last Dune book). But it hooked me and read it voraciously. I was surprised how quickly I finished it. I liked how all the parts are faced at the end and the goals they want to achieve plus how different are the personalities of each character.
It was interesting after four books, that is the first time it is mentioned alien life and robots. Thinking this is sci-fi based on a very far future I should have noticed that very early on the series but still it is really engaging with all the twists.
Looking forwards for the next books!