Full review can also be found on: Paein and Ms4Tune's Book Blog 
 To be honest I skipped most of this novella - it's describing Khalid's reaction to the destruction of Rey, which is pretty important, but I was desperate to read about the people not the place! When I got to the important people, it was pretty much a case of Jalal explaining the decision he made at the end of The Wrath and the Dawn. 
 These novellas should be read after book one. After book two if you so choose as well. But even though there's a 0.2 and a 0.5, you wont care much about the characters until you've read The Wrath and the Dawn.