SO good -- and so hard to wait for these installments! 
 The Perilous Seas has all the risks of a "middle book" -- it doesn't get to slowly ramp up the conflict and romance like the first one does, nor will it get to resolve into a HEA like the last one will. So what does it or should it do? 
 This one starts interestingly with an amnesia device -- neither hero nor heroine remember the events of the first book nor each other. This is both clever exposition (it allows her to tell us all sorts of things we should technically know already) and it allows for *another* ramping up of the conflict and relationship a second time around. It's like an amazing do-over.... 
 So that works well and it's fun to watch Titus and Iolanthe fall in love again without knowing that they were already in love (I don't think I'm giving anything away by saying that--??) Otherwise, the plot twists were predictable for me and the world-creating isn't her strongest suit either but Thomas is so adept with dialogue, description, and character development that I'll forgive lots--