Blake, Kendare

Months after Anna Korlov opened a door to Hell and sacrificed herself for seventeen-year-old ghost hunter Cas Lowood, persistent visions of Anna being tortured cause Cas to decide to save her as she once saved him.

Cas Lowood, armed with his late father's mysterious athame, set out to kill a ghost known as Anna Dressed in Blood, but what he believes will be a routine task turns deadly when he discovers Anna is unlike any ghost he has ever encountered before.

Athena and Hermes' search for the cause of their unexpected, life-threatening illnesses leads them to Cassandra, a former prophetess, who may be key to a war started by Hera and other Olympians who have become corrupt anti-gods determined to destroy their rivals.