A fairly short, dry (i.e., not terribly interesting) "revisionist" (by the author's own account) history, purporting to show that Beria -- despite certain flaws (like being a mass murderer and serial rapist) -- loved his son and was the reformer, while Khrushchev (who had Lavrenti murdered... in cold blood)... was actually the totalitarian.
Proof that scholarship abhors a vacuum.
Specialists may find the book of more use.