Those living a double life of lies are the clergy and religious.
It is not only a double life of lies, but blasphemy of the worst kind. Truly these men are in league with Satan
No doubt, they will be consigned to the lowest regions of Hell, for not only did they cause the damnation of the souls they abused and counseled, but also they desecrated the Holy Sacrifice of the Divine Liturgy and probably participated in satanic rituals too. These perverted priests would not need to obtain "consecrated hosts" to desecrate in satanic rituals as they could confect their own through the power of the priesthood.
No, there is no reason to read these books, as doing so would likely cause nightmares and be a serious distraction preventing one from saying daily prayers. Thus, reading such an exposé would not be conducive to our own salvation.