Phantasma was such an important read for me and in my opinion is an 

EXCELLENT representation of what it's like to like with OCD. Beyond the story line, which was twisty and turny in it's own right, Ophelia's struggle with the shadow voice was on point on what it's like to have intrusive thoughts and the compulsions you have to complete to try and make the thoughts go away. Blackwell was... Blackwell and I'll be damned if he wasn't a character I didn't see coming. 

This also gave me Hunger games vibes and I loved the competition element.