(This review is of the 3.5th book in a series, its predecessors are The Iron King, The Iron Daughter, Winter’s Passage (2.5) and The Iron Queen. My reviews for those are linked. As always with sequel reviews, minor spoilers might be revealed. YOU ARE WARNED.)
“A Midsummer’s Nightmare? Robin Goodfellow. Puck. Summer Court prankster, King Oberon’s right hand, bane of many a faery queen’s existence—and secret friend to Prince Ash of the Winter Court. Until one girl’s death came between them, and another girl stole both their hearts.
Now Ash has granted one favor too many and someone’s come to collect, forcing the prince to a place he cannot go without Puck’s help—into the heart of the Summer Court. And Puck faces the ultimate choice—betray Ash and possibly win the girl they both love, or help his former friend turned bitter enemy pull off a deception that no true faery prankster could possibly resist.
An ebook exclusive novella from Julie Kagawa’s Iron Fey series.”-goodreads

I love these mini-adventures between books. As in “Winter’s Passage” the adventure isn’t necessary to understand the next book (I imagine, I mean, the Iron Knight isn’t out yet, so I don’t know for sure) but is a little extra bit for anyone who really likes the series. In this one, rather than spending time with Meghan and Ash, we’re with Puck and Ash. That was really interesting because although it’s been getting better over the course of the books, they kind of hated each other (for understandable reasons, once we know the story). It’s from Puck’s point of view, which was different. I enjoy Puck’s sense of humor and wit, although I’m still firmly Team Ash. Yes, the ice prince. This novella was really good, but at the same time a bit too much of a tease! I can’t wait for the Iron Knight to come out, especially now that I’ve been back to the world of the Iron Fey for a bit. I love Julie Kagawa’s writing!
If you’ve read the rest of the Iron Fey and want to read Summer’s Crossing it’s a free novella (like was done with Winter’s Passage). You can download it for your respective E-Reader or read it online a the website here.