The team tries to track down a killer that only strikes on Devil's Night, the night before Halloween.
A massive tsunami hits the Santa Monica pier; Buck fears the worst when Christopher goes missing.
Louis takes the family along on a business trip to Gator World; Jessica finally relaxes; Eddie faces his fears on the Death Roll.
The story of Melinda's transformation is revealed. Meanwhile, Skye learns more about her heritage.
May works to uncover the truth about what happened with Dr Radcliffe, while Aida's next move puts everyone's lives at risk.
