I found this author through bookstagram and her hilarious book goblin videos. I started with the first three books of Daindreth's Assassin before reading The Archduke, a short retelling from Daindreth's perspective. I have liked all of the books, but really enjoyed this one the most so far. The story is about a prince who is possessed with a demon that is getting harder to control, except when he comes into contact with a noble woman who is also an assassin sent to kill him, but when she fail she becomes betrothed to him instead. Now they are on a quest to save him and in turn their people. I still have the last two books to go, so no spoilers, but it's an interesting society/world/magic system that the author has constructed, so I would recommend the series based on that.