Can be read through THIS LINK.
This is basically a children's story, it's told from the POV of 10 years old Hannah, going on a "nightly adventure" with her brother trying to help Kola's friend and ending up mixed in a violent situation. I guess it was kinda sweet but it was SO childish I didn't care of it.
Unnecessary for the series, but if you're into little kids you will probably find Hannah endearing. I don't usually like reading of kids in romance novels but since most books in the series took place years apart I thought Hannah would be an adult in this one (I was wrong..).
This is still a HIGHLY HIGHLY RECOMMENDED series, if you haven't read it yet, do yourself a favor and grab the first one ASAP.
Additional Details: Kindle Ebook, 19 pages, 15 May 2016 / On GoodReads