Jonas Nightengale is a fraudulent Christian faith healer who makes a living travelling around America holding revival meetings and conducting 'miracles' with the help of his friend and manager, Jane, and their entourage.
To prove his brother's innocence, undercover officer Nick enrolls in high school again, dealing with crushes, bullies, humiliations, popularity swings, and quirky teachers and staff to find the real murderer.
A Cincinnati museum director goes on trial in 1990 for exhibiting sadomasochistic photographs taken by Robert Mapplethorpe.