And without any further ado...
I find that I often get really invested into a series at the second book. It happened with Catching Fire and The Queen of Attolia (see below), and also with Rae Carson's debut trilogy. I enjoyed The Girl of Fire and Thorns (the first book in the series) when I read it last year, but I loooved The Crown of Embers. Rae Carson does strong female characters incredibly well. Too often, "strong female character" is taken simply to mean "good at beating people up" or "stubborn." But Carson's Elisa learns strength in the ways that matter -- in compassion, self confidence, independence, confidence, and integrity. Elisa in The Crown of Embers is a stronger, surer one than in TGoFaT, but we still see her grow as a woman and a queen. And Hector (swoon)! Who knew he'd be so dreamy without the mustache? The Bitter Kingdom is on my bookshelf, and I'm very much looking forward to it.