Hacker's guest is Coronation Street's Andrew Whyment.
Hacker's guests are Khalil Madovi and Jason Callender from 4 O'Clock Club.
The cadets meet in Cornwall and are split up into three groups of two.
The cadets travel to Campbeltown, in the highlands of Scotland.
The cadets attempt to save two young people from a freezing cold lake.
When two climbers fall, on a dangerous ledge, the cadets are called out to help.
The six Hero Squad cadets work with London's Air Ambulance.
Two Hero Squad casualties are trapped in a building.
The Hero Squad cadets are in Morecambe Bay where they must navigate sinking sand.
The cadets attempt to rescue a casualty who is buried under a collapsed building.
Six new recruits become Hero Squad Cadets and start a rigorous training programme.
It is time for one of Rattus' favourite games - the Middle Ages Pig Piano.
Contestants have to see how many flies they can catch.
Rattus tries to get the contestants to play a truly revolting Georgian warm up game.
Darrel prepares to play his own piano composition in front of a live audience.
Some of history's greatest characters serenade us with tales of their lives.
Brian the handsome scientist reveals the weird wonders of the Greek Universe.
Kids concoct the most preposterous pranks on unsuspecting adults.
Voltar gets angry that his fortune cookies always have the same message - 'banana'.
Voltar wants to win a mystery prize by guessing the number of gumballs in a dispenser.
Frogg invents a mind control device that gets the world hooked on tofu pops.
LOSE create clones of themselves to clean up after Doomageddon.
Hoping to try his hand as a villain, Justice Gene comes to live with LOSE.
Voltar and Red resurrect Frogg's first childhood experiment for his birthday.
LOSE loses a drag race with Doom Driver, a racer who takes the rides of his victims.
When the monsters are left home alone, they receive a surprise visit from burglars.
The monsters argument over Eddie's birthday turns into a full scale row.
The monsters think they have caught Nick's illness, so they make their own 'medicine'.
When a deadly poison is stolen from MI9, the spies suspect an eccentric puzzle maker.
When the spies discover a SKUL school they send Oscar on an undercover mission.
The team investigate a local dance school that may be hiding a secret.
The pupils of St Hope's are horrified when they are forced to speak politely.
The Grand Master has built a super weapon with only one missing component.
The spies investigate when an MP threatens to send Britain's kids to a remote island.
Vic tries to save the Ministry.
Documentary about 14-year-old Hannah, who suffers from face blindness.
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