I missed the Zetithians...
My issues are... I don't remember the joy juice causing the reactions that way. Granted, it's been a few years since the last one. Still... Not sure any of the previous books are where I can reach them though to double check. Oh wait - one was a freebie on kindle once.
And... I generally don't find it that interesting to read up on the now adult offspring of previous H/h pairings. Actually, most of the time I find it uncomfortable, particularly if the author has let me see v. much in the growing up of said offspring.
The H and h are offspring of the two couples on the Jolly Roger, namely a son of Jack and Cat, and a daughter of err...whatever her name is, and Leo. There's a bit of side romance after a fashion in the form of a couple from the Statzeel/Zetithian breeding program. I was a bit... Ok, it's been a while since I read Manx's book so I must have missed the negotiations where he and Leo donned rubber gloves and grabbed mason jars. I knew about Cat's contribution as that happened in the first book. Apparently this is ongoing and I have to wonder - did it occur to them at any point that their lifestyle wasn't really compatible with Zetithian mating habits?
Whatever. It was interesting, particularly that the hybrids don't always function quite the same as the purebloods. Also interesting that it has occurred to someone that these guys have the potential to wipe out other races just by interbreeding.