The Toby Daye books are one of my all time fave urban fantasy series. The first book was hard for me to get through because Toby is just in SUCH a terrible place after everything that happened to start off the series, but it's so utterly one of those series and stories that just gets better and better with every installment. It's flat out a MASTERCLASS in playing the long game overarching plot wise. With each book that comes out, you get reveals from hints and what seem like throwaway moments from earlier books that are just mindblowingly well planned out. It's definitely worth keeping going. They all are a bit who-dunnit-ish (Toby is a PI/knight errant after all), but the ways the mysteries are tied together and to the bigger picture plots are seriously cool I think! Seanan McGuire (and her other pen names) is probably one of my top three fave authors by now.