1. Toadblatt's School of Sorcery/Educating Grim/It's Hokey Mon!

Grim gets Billy and Mandy into Toadblatt's Summer School of Sorcery. Then, Mandy's arch-nemesis, Mindy, befriends Grim.

4. Who Killed Who?/Tween Wolf

Mandy visits the old haunted house down the street. No one has emerged from that house in years. Will Mandy's fate be different?

5. Grim in Love/Crushed/Love is Evol Spelled Backwards

Grim falls in love with a Goth girl. But what will happen when she discovers Grim is not just a thin, pasty guy in black?

6. The Crawling Niceness/Smarten Up!/The Grim Show

Billy hatches a talking spider from an egg in Grim's trunk. Then, to help Billy pass a test, Grim gives Billy a bookworm to smarten him up.

7. Son of Nergal/Sister Grim/Go-Kart 3000

Billy and Mandy go to camp and must contend with snowy weather, a freezing cabin and Nergal, Jr.

9. Billy and the Bully/To Eris Human/Big Trouble in Billy's Basement

Billy runs afoul of Sperg, the school bully. With the help of Mandy and Grim, will Billy get Sperg to leave him alone?

10. Battle of the Bands/Little Rock of Horror/Dream a Little Dream

Grim becomes the lead singer of a goth metal band. Then, Billy befriends a giant brain-eating meteor in his backyard.

12. Get Out of My Head/Look Alive/Mortal Dilemma

Grim teaches Billy how to take control of someone else's body. Then, the Grim Reaper confesses to a desire to be a swimsuit model.

13. Fiend Is Like Friend Without the "R"/Recipe for Disaster/A Dumb Wish

When Billy and Mandy are kidnapped, Grim must decide to rescue them or relax. Finally, Billy and Mandy discover Grim's mom is a genie.

14. Grim or Gregory?/Grim vs. Mom/Tastes Like Chicken

While on a Halloween excursion, Grim finds himself mistaken for a young boy named Gregory. It's up to Billy and Mandy to return Gregory to his mom.

15. Billy and Mandy's Jacked Up Halloween

Jack, a headless prankster from Grim's past, uses Billy to steal Grim's scythe so he can destroy Grim and take over the world with demons.

16. Something Stupid This Way Comes/A Grim Surprise/Beasts & Barbarians

Nergal returns trying to win friends with a carnival. Then, while on an excursion, Grim is mistaken for Gregory.