I own the book, its good at exposing the UN scandal and how the spiritual paradise the organization claims to have is false...but in the end --paradoxically-- he still believes 80-90% of JW theology, and encourages people to stay with the organization. He maintains that Jehovah's organization MUST apostasize according to prophecy and that it's somewhat of a litmus test from Jehovah to all witnesses to see their true faith. He doesn't help his case as the only way it can be Jehovah's organization in the first place is if 1919 is true, a subject which he dances around in his book. I remember finishing the book and thinking...."Should I stay or should I go?" Causing an already existing cognitive dissonance to become even greater.
I would strongly suggest reading Ray Franz' work before reading Robert Kings.
FYI, Robert King strongly discourages reading Ray Franz' books as they completely dismantle the organization's authority or claims to divine appointment.