An amnesiac named Elle enters Los Angeles, carrying only a locked data device that may hold the secrets of her past.
Coulson and his team find themselves without anyone they can trust, only to discover that they are trapped with a traitor in their midst.
Kara and her friends must rely on their inner strength and courage when an earthquake strikes National City. Also, Alex’s mistrust of Hank reaches a breaking point when the earthquake…
When an unusual tattoo leads back to Roman, the team must decide whether to send him into the field…to go undercover with a dangerous biker gang.