See full review for Gates of Paradise at: http://toomanybooksnotenoughshelves.w... 
 In the final book of the Blue Bloods series, Schuyler, Oliver and Kingsley are doing all they can to protect the final gate that leads to Paradise. The Covens have all been disbanded and are hiding underground. Jack and Mimi have disappeared and the rumors are spreading that they've returned to the Dark and Lucifer. Bliss has found the wolves that will help the Blue Bloods in their battle for Heaven, but they are stuck outside of the passages of time. 
 Jack and Mimi, have indeed joined with Lucifer again, but as those who read the last book know, it's only to play double agent so that they can break the bond that they have to each other so that they can each be with the person they love. But their plan seems to be backfiring, because the Morningstar knows all.