Oh boy. As with the previous two books in this series, I devoured this one in under two days (and still, I was doing my best to exercise some self-control). Because even when something feels entirely mundane in this story, it's never boring, it's never dull. There's always some detail to be noted, some development, some new piece of information or emotion to slowly make up the bigger picture, some new facet of this amazing world to be revealed. The mystery had me constantly searching for new breadcrumbs in the story, and the slow reveal of Olivia's past and family was so compelling. Not to mention, I'm such a sucker for good character/relationship development, as well as interesting villains. And while the first two books have definitely been layered and complex, this one kicks it up a notch; it feels bigger, denser, like it's really building up to the finale.
Seeing Chris and Olivia's friendship evolve and deepen has been incredibly satisfying, and moving, as it has been to see them change each other for the better. Speaking of, I've always found Chris to be a frustrating character -- but in the very best way. I adore him, and so many times I've had to pause reading to just sigh, close my eyes with my hand against my forehead and whisper, "Chris, no". Because he is frustrating. He is a snob, immature in many ways, and something of a coward -- but the reader is made very aware of it. In truth, he behaves like most of us would (if we're being honest), and he's constantly called out on it by other characters -- which makes his growth and development all the more satisfying. He's not a static character, but actually noticeably changes. Just like seeing Olivia soften up and accept that yes, sometimes you find a friend person and there's actually no catch to it at all (and the cats, good god the cats, yes). Plus, I really liked the development of Rosemary and her relationship with Chris; it was a long time coming, and it was good.
As always, the romance aspects of this book(/series) are so important to me, as someone who identifies as bisexual. Seeing Chris's struggle, understanding it despite being infuriated by it, with both potential love interests written as well-rounded characters in their own right and not just as simply love interests -- it's what I'm here for (also, Will is my son and I would die for him, just putting that out there). In short, The Heartreader's Secret is everything I want from a story, and I'm already dying to read the conclusion to the series.