After a botched drug deal, Troy must take his family into Witness Protection in exchange for giving evidence against his former employer, vicious crime boss Nils Vandenberg.

The Swifts try to make their new identities work as Mitch and Tara start at a new school. Bec and Lincoln distrust Pinder as the case against Nils stalls.

Tara makes an awful discovery. Bec has a terrifying encounter with an intruder. Mitch looks out for his sister. Lincoln ponders biosocial crime theory.

Mitch decides to run away. Lincoln learns the awful truth about his best friend. Bec faces the possibility of losing her husband, as Lincoln decides to face his adversaries head-on.

Lincoln discovers that a hit-man may be on his trail; and Bec's renewed friendship with Ash threatens to expose their plight.

Lincoln gives a lecture at university, with bizarre consequences; Bec admits to a grave misdemeanour. Under pressure, Mitch and Tara act out, betraying their parents and putting the whole family in danger.