These books were good-- I was engaged by the characters enough to finish them (though it got annoying that they kept ending in cliffhangers through FIVE installments that could have been one book). I assume there are more installments coming and am not sure I'll continue. The BDSM is too prominent a part of the relationship, for my taste, though Wolff handles it pretty well-- making it a conscious and mutual choice for both Sebastian and Aria. Their sexual connection then is really the whole book. There's little other plot or character development. So if that's your thing then you'll like these books.