By Zack Quaintance — Quarter Killer is now my third experience with a book from ComiXology Originals, the content publishing arm of the industry’s dominant digital comics platform. I’ve enjoyed both of the other series from the imprint quite a bit — those being The Black Ghost and Afterlift — and as a result, I came into this one with relatively high expectations. Those expectations, friends, were not just met — they were wildly exceeded.