Look out for the ghost goo! Dripping sticky green slime wherever it goes, and “ASG” (that’s Averagely Spooky Ghost) is hiding out in Tom’s cellar. Why? Because it’s being haunted, too- by a much bigger, way badder Incredibly Revolting Ghost (“IRG,” for anyne new to ghouls). And the IRG is the kind of ghost that uses its head- as a ginormous bellowing bowling ball, gross! Good thing for Tom his grandma’s best friend just happens to be a world-famous ghosthunter…

Boy hero Tom, Hugo the Averagely Spooky Ghost, and famed ghoul hunter Hetty Hyssop have formed an agency dedicated to dealing with difficult apparitions. No spook can defeat them-until their too close encounter with a Gruesome Invincible Lightning Ghost.

This superheated specter (or “GILIG,” in ghosthunter-speak) has taken over the penthouse suite of a beachfront hotel, where it’s passing its eternal vacation by turning guests into ghosts themselves!

Maybe Hugo’s slime can douse the flaming phantom- or maybe the ghosthunters’ plan is doomed to go up in smoke…

Get scared silly!

Strange and stinky things are happening at Gloomsburg Castle. To begin with, the creepy place is crawling with TIBIGs (Tiny Biting Ghosts, per the Indispensable Alphabetical Index). And now it appears that the murderous spirit of a 400-year-old, Totally Moldy Baroness has possessed the palace's owner, infecting her with a killer case of hic-hic-hiccups!

To put an end to the foul play and dispel this rank, decaying royal for good, count on ghost-busting boy wonder Tom, Averagely Spooky Ghost Hugo, and the ever-resourceful Hetty. Go ghosthunters!

Intrepid ghosthunter-in-training Tom has battled Incredibly Revolting Ghosts, Gruesome Invincible Lightning Ghosts, and a Totally Moldy Baroness. But it ends up nothing--NOTHING--is more frightening than...final exams. To earn his Ghosthunting Diploma, Tom's got to nab a Deadly Messenger: the hardest ghost of all to catch. And while on the hunt, he stumbles into the yucky, mucked-up lair of a mud-dripping minotaur demon who's assembled a ghoul army with the goal of world domination. Suddenly there's a whole lot more at stake than Tom's graduation: This is one test the team can't fail!