Justin Cronin got his start publishing quiet but moving “literary” fiction. In 2010, he blew up North America (in a manner of speaking) with his post-apocalyptic don’t-call-them-vampires “genre” novelThe Passage.

We can’t hope to cover every plot point or character in Cronin’s 766-page genre epic, but we try to at least touch on a few reasons for its mainstream appeal: rich characters, an unrelenting plot, and lots of sweet jargon.