A spaceship? In the mine? The source of Buckstop's power to zombify is revealed ... as Jamie and his gang make their escape.

After a subterranean chase, Jamie and Sam find themselves face to face with the source of the mysterious zombie-juice ...

Buckstop's goons, and a classful of zombiefied schoolchildren, chase Jamie and Sam across town. And those squirrels are back.

Is that a lemonade truck parked outside the school? Or something way more dangerous? Sam and Jamie escape Dr Smillie's trap, but will they be in time to save their classmates ...?

A zombiefied squirrel? And a zombiefied police chief? The weirdness is spreading ... Meanwhile, Dr Smillie tries to lure Jamie and Sam into a trap.

Mine-owner Voom Buckstop reassures the crowd all is well, but Jamie's dad has still not returned home. And later Buckstop unknowingly lets slip his evil plan over the airwaves ...

Jamie and Sam hear an explosion coming from the mine, and run to help. It seems no-one's been hurt, but one of the mineworkers is acting decidedly ... weird.

On the first day at his new school, Jamie is befriended by Sam, and harassed by the school bully. Local billionaire Voom Buckstop makes an unwelcome appearance in class.

There’s a strange glowing liquid which affects those who touch it… and there are zombies.