Zak and Zoe travel to Ireland for their first Valentines Day as husband and wife. They have been invited to attend a murder mystery weekend in a real haunted castle. During their first night at the castle, they find one of the guests dead. Really dead. As they delve into the murder they begin to see that not only are things not as they appear, but several of the other attendees are not who they claim to be. During the course of her investigation Zoe discovers a secret about herself that is more than just a little shocking.