The Iron Fey #3.5 + #3.6 by Julie Kagawa

Summer's Crossing: 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.From Goodreads.

Ash's Letter To Meghan: Get set to swoon: read Ash's heart-rending final letter to Meghan. From Goodreads.

A short story (52 pages) and a one page love letter.
I enjoyed the short story as it is an interesting relationship between Ash and Puck. Once very close friends now not so, but still even though they try to be bitter enemies it is not as convincing anymore. They need to help each other.
The love letter was okay and shows the feelings Ash has for Meghan.

This book (Summer's Crossing) qualifies for:
Goodreads 2013 Reading Challenge
Serious Readers 2013
2013 Ebook Challenge
2013 Women Challenge
2013 Sequel Reading Challenge
Quick fix Challenge 2013 (52 pages)
2013 Paranormal Reading Challenge (fey)
Let Me Count the Ways Reading Challenge 2013 (52 pages)