A serial killer stalks Pittsburgh, re-enacting the history of human sacrifice and martyrdom, attacking religion by attacking the religious. The baffled police department turns to local PI Lupa Schwartz and his journalist partner Cattleya Hoskin, hoping the former can use his connections in the atheist community to find a killer with a vendetta against faith.
Coerced into action, the pair face their hardest, most draining case yet. Cattleya risks breaking her professional ethics by using her media connections to draw out the psychopath. For Lupa, this case puts both his credibility and his friends' lives on the line. Only together can they hope to catch a monster, but it could mean tearing down their careers to do it – if they survive at all.