A Shade of Kiev 3

The greatly anticipated conclusion to Kiev's stand-alone trilogy, from million-bestselling author Bella Forrest!
After all that's happened, I thought I was past being surprised by Mona.  
But standing here by the lake, I realize I've barely scratched the surface. Her soul is blacker than I could have imagined. 
I thought I sought redemption. 
But now, I wonder if this darkness is what attracted me to her all along...
Matteo's words ring in my ears: "Of creatures who inhabit the darkness, there are two types. Those who revel in it, and those who fight to escape it."
Which am I? Or which do I choose to be?