During Saturnalia, normal business and official routines give way to feasting, role reversal and street disorder. Manlius Faustus discovers that rival gangs are fighting for control of the profitable trade in nuts used as holiday food and missiles.
Albia and Tiberius investigate without reliable official support as intimidation reaches their household. The criminal scheme expands beyond market extortion when the conspirators attempt to exploit an imperial celebration and place Domitian himself in danger.