I almost didn't read this series.
I've been reading through Kristen Ashley's books and had just finished the Magdalene series and wasn't ready to move from KA, so I figured I'd give this a shot. The BDSM tag threw me off of it a bit, but I figured I should just give it a shot.
The first book, Knight was just... ehh. I finished it mainly because I bought it and I have my own personal rule that if it's not on KU and I paid for the book, then I will force myself to finish. Since I bought the bundle of the series, I was not entirely enthusiastic about finish them, however, I persevered and found that the first book was just a fluke.. the rest of the series was pretty good.
That said, I haven't yet finished Creed. I'm not sure why, but I couldn't get into it, so I just said eff it and moved on to Raid. I'll go back and read book 2....eventually.
Of them all, I can't decide which one I liked more - Raid or Sebring. They were both good and I liked both Raid and Nick... as well as Hanna and Olivia. So, its a tossup.
Anyways, I could go on and on about this series and drop of bunch of spoilers, but I (a) don't wanna, and (b) DO wanna start reading my next KA series... so I won't. I will say that this series doesn't have to be read in order and you could get away with only reading one book from the series and not be too confused, but I would recommend reading them in order, otherwise you might get lost with some of the events that happen as the series progresses. Although, Deacon doesn't really count as it seems completely removed from the series with the exception of the last bit of the epilogue.
Anyhoo... I'm gonna get started on my next series now.