Evangeline Hollis isn't your normal student. She is going to school to hunt demons, for God. It's an elite program. One can only be accepted by sinning, and then becoming a full-fledged Mark. As a Mark, Eve has no choice but to hunt down and kill demons. And her sin; Cain, the sizzling man she lost her virginity to and who is in love with her.

When her class goes on a week-long field trip to an abandoned military base, the schooling suddenly becomes extremely hands on. Someone, or something, is killing off her classmates, one by one. As classmates die off gruesomely, and her instructor becomes one of the possible body count, Eve struggles to solve the mystery to who is behind the killings, as well as try to keep safe and ignorant a group of civilian ghost hunters who have arrived at the base, all while battling her own physical changes. She must do all of this on her own as Cain is sent away on an assignment and her handler, Cain's brother Abel, is away tracking a deadly demon himself.

EVE OF DESTRUCTION by S.J. Day is the second book in the Marked series. It is well written with mystery and well detailed scenes, which include fierce fights and scorching interactions between Eve and Cain, as well as Eve and Abel.