In the second book of the Darkest Powers triology we catch up with Chloe after her escape from Lyle House. So as not to spoil the previous book I'm not going to delve into the plot itself. 
 This installment could easily feel like filler as most of the events are reactionary to previous major events and for the most part, it's Chloe's narrative of being on the run. This is all very important to the series, however, for character developement and setting up the plot for the final book. 
 In the end, I found it was done really well. I quite enjoy Armstrong's narrative voice which was able to make some of the less "exciting" moments still really intriguing - especially if you're interested in character building. 
 The only problem I had was how quickly events moved but it did make sense since the events of the entire triology are set out over a short period of time. So while the pacing felt rushed, it also felt right since it conveyed the pace and emotions of the characters and this can be seen as well in the character's rare quiet moments where the pacing of the writing slows.