These are all good books and I recommend reading them in order, I personally waited until there was Site Wide sale on Audible and got them all as they are all along the same lines, unfortunately they are short, so I don’t recommend a full credit on them. They are best if read in order as the story line progresses, start with Marcus. If you are like me and love a good alien romance this is a good choice in a series. Like all series you have your favorites out of the bunch. I like the combative competition that gets these two going. This one might be one of my favorites from the series. Narrators are good.