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Three siblings are trained as monster hunters by their tough old grandfather. The kids are massive horror fans and love all kinds of monsters, and they always find a way to save the monsters.
Welcome to Gruselbrook, Part 1. Three monster-loving kids visit their grandfather in the most haunted city on earth.
Welcome to Gruselbrook, Part 2. Edith and Bo decide to stay and fulfil their destiny, but Ernest has serious doubts.
The monster-loving maniacs dive into the fascinating world of ‘time slime’.
Arthur and the kids embark on their first mission together.
A small paranormal disturbance escalates into a full-blown hamster exorcism ritual.
In a battle for control of the TV, Arthur and the kids make a bet.
Edith leads a reckless mission to awaken a dangerous, undead substitute teacher.
Ernest goes on his first date, but Gruselbrook can be dangerous at night.
The lady of the lake needs help from three young monster experts.
Get ready to meet Rebecca, Arthur's ‘terrifying’ house ghost.
Bo gets abducted by a family of trolls - and loves it!
Dracula points Edith in the direction of an ancient book about vampires.
Arthur tells the story of how he managed to capture Dracula in the past.
Ernest is excited, and Edith and Bo want to stay in.
Door Number Three, Part 1. Ishaani opens up to Ernest about her secrets.
Door Number Three, Part 2. Ernest and Ishaani are trapped inside another dimension.
Edith manipulates her surroundings to wage an all-out prank war.
A giant, energy-eating bird is draining the Gruselbrook power plants.
There is trouble in Gruselbrook Park.
Bo discovers a strange and adorable creature under her bed.
Arthur's monster-hunter plane gets infested by three destructive gremlins.
The Van Alten family is plagued by terrible nightmares.
Arthur bestows Ernest with a medallion that will make him invincible.
Guess Who’s Coming to Dinner. Ernest invites Ishaani and her mum over for dinner.
Arthur identifies a local werewolf and immediately decides to freeze it.
The kids look for a way to break the unbreakable werewolf curse.
Grandma Tamsyn uses her magical powers in ways the kids don't approve.
Tamsyn has cast a spell over the family.
Three intergalactic Christmas demons known as the Three Wise Men drop by.
A former werewolf known as Wolfcheski has some trouble managing his temper.
Edith meets a vegan vampire named Edward.
Edith is found guilty of treason and is banished from the mansion.
Solstice is here, and the Van Altens gather around the fire to await the night.
The kids try to help a clueless swamp creature fit in.
Ernest and Ishaani take another trip inside the mirror.
Arthur believes real monsters are at play at Gruselbrook Funpark's ghost ride attraction.
The kids embark on a monster photo safari.
Dracula is determined to draw Edith into another prank war.
In a quest for unimaginable pampering, Phil joins forces with an ancient mummy.
The Mirror of Souls - Part I. Dracula is back with a special mission for the kids.
The Mirror of Souls - Part II. The three new vampires must confront Arthur's nemesis, Victor Van Helsing.
The Banshee has come to Gruselbrook to collect the departing soul of an old hunter.
The world’s scariest monster wants to be a comedian - but he's just not funny!
Arthur challenges the kids to fix the most evil doll that ever existed.
The kids engage in a battle with Mrs Jorgensen, a super-poltergeist.
A crew of zombie pirates emerge from the ocean to fight a ritualistic duel of swords.
Dracula and Edith swap bodies.
Once a year, monster hunters must host the terrifying, fashion-obsessed Icelandic Yulecat.
Ernest and Ishaani go through the mirror to experience a terrifying future vision.
The Dark Lord Cometh - Part 1. Dracula is coming for Arthur, and the Van Altens prepare to face one angry vampire.
The Dark Lord Cometh - Part 2. The heroes desperately try to avoid a confrontation with the invincible Dracula.