Nate Springfield, his wife Sarah, and their twin Children Elijah and Elisha are part of the Veritas Project Team. This group travels the country aiding the FBI and other organizations in breaking up drug rings and solving mysteries. In Hangmans' Curse, the family goes undercover at a small town high school, where a mysterious curse has turned several of the star football players into raving lunatics who can only be tied to their hospital beds while doctors are baffled by their symptoms. Elijah and Elisha must befriend the various cliques at school, and help their parents solve the mystery of Abel Frye ( a name the sick kids mutter in their delirium).