While waiting to be picked up from school, Jack plays at being a sailor trying to find his way back home to Australia. Meanwhile, Jack's Dad has got lost on route to collect him.

As the adults race to destroy all clues to the location of Alpha Centauri, the Robinson kids receive an ominous message from SAR.

Anna helps her dad move into an apartment. Maya is confronted by a surprise visitor from Japan.

Determined to track down Blunt and warn him about Yassen's return, Alex unknowingly puts himself on a collision course with The Department, who are simultaneously hunting a dangerous cyber-terrorist. But are the two cases more closely related than either side realizes?

The weary crew dodges danger in the desert while trying to figure out where they are. But they unearth more questions than answers.

The Warners lead a mandatory exercise break.

Tye is invited to do a Forbes interview, and decides to end things with Shayla. Angie is offered a role in a musical. Quinn struggles to make ends meet as the rent increases for her store. Camille's boss tells her some bad news and she crosses paths with Ian at a friend's engagement party.

Unsure of her future with Santa Inc., Candy must decide if she should hop on a golden opportunity with Easter Enterprises or stay loyal to Santa.

The high-stakes horse-trading begins in Canberra as Alex and a small group of Independents meet to decide the future of the nation. With bigger threats looming, Alex and Rachel will need to find a way to trust each other.

In the final epic chapter in the story of the Flux, all hope is lost. The forces of darkness are in control. But when the monsters have won, who can you count upon to save the universe?

Two couples face a dance-off to secure a semi-final spot. With a guest music performance by JLS.

Paddy reviews the very rare, very expensive Aston Martin Victor, while Freddie sets out to become a proper, qualified racing driver. Chris investigates the stranger-than-fiction story of the time-travelling DMC DeLorean.

Lars is hired to help Alfhildr investigate a brutal murder, which turns out to have ties to 19th century England. Re-Christianizing Norway turns out to be more difficult than Olav Haraldsson imagined.

Hero, a young man from South London, is in the dock for murder. He decides he wants to tell his own story, rather than the version that his barrister has prepared.

Tamayo hunts for the gold as the team races against the clock. Mónica worries she's having a psychotic break. Years earlier, Berlin is deceived.

A gruesome letter leads the investigation in a new direction, and Lars discovers that the British police officers may not be who he thought they were.