Defending the house on Halloween, Charlie's in for a fright when Pierce invites the neighbourhood (and at least one monster) over for a costume party. They must trick the gatecrasher to reveal itself before it gets its treat.
Season 1
Season 2
Season 3
Witch Watch Stop the Monster Slime Stop the Monster Battles Survive Fright Swap Put the Barbarian Back in the Box Catch a Slimer Save Li'l Helsing Don't Trick or Tweet Undo the Genie's Wish Call a Monster Finish the Mop's Bucket List Escape the Strange Chores Clean the Toilet Host a Monster Hunter Tournament Swap Back the Body Swap Tame the Wild Wild Pest Clean the Car Shut the Freezer Outsmart a Smart House Train Snorp Stop the Dummy's Dummy Survive the Strange Loop Babysit the Mummy Get Back the Monster Hand Clean the Archive Room Scare Helsing
Witch Watch Stop the Monster Slime Stop the Monster Battles Survive Fright Swap Put the Barbarian Back in the Box Catch a Slimer Save Li'l Helsing Don't Trick or Tweet Undo the Genie's Wish Call a Monster Finish the Mop's Bucket List Escape the Strange Chores Clean the Toilet Host a Monster Hunter Tournament Swap Back the Body Swap Tame the Wild Wild Pest Clean the Car Shut the Freezer Outsmart a Smart House Train Snorp Stop the Dummy's Dummy Survive the Strange Loop Babysit the Mummy Get Back the Monster Hand Clean the Archive Room Scare Helsing
