Matt Haag, nicknamed The Professor, was invited to attend a dinner party at an Estate hosted and owned Joey Graceffa, which was only accessible by traveling to the 1920s. Matt immediately has suspicions about Lele Pons, causing them to hate each other, constantly voting for each other throughout the season. He is one of the only two guests who didn’t vote for Justine Ezarik to be buried alive. He volunteers himself into the Exorcism challenge, but takes it back, which everyone says you can’t do, causing him to be voted into the challenge against Sierra Furtado. Matt skims through one of the instructions, and places the rosary on Sierra, which kills her. He then reads the note fully, finding out he could’ve killed himself or Sierra. He becomes depressed after this, blaming himself for Sierra’s death, causing him to give up on the group, believing that they were all going to die. The group turns their back on Matt, voting him in again the next episode to fight Timothy DeLaGhetto in the Doll Room Challenge. Matt believes he has his doll placement correct, but is actually wrong, causing him to drink more poison instead of the antidote, killing him.
Episode 1 - An Invitation
Matt is assigned the role as 'The Professor'. He talks about how he doesn't go to parties much. When Shane is poisoned, he reads the telegram that he received right before he was poisoned.
Episode 2 - The Ungodly Machine
At voting, Matt does not trust or like Lele and wants her to be the one to go, as she accused Tim of being a murderer straight away.
Episode 3 - Buried Alive
While everyone is accusing each other, Matt is the first one to accuse Justine of working with the evil, as he says she took out Andrea, saboutaged the entire death machine and that it has to be her. She gets very defensive about this, and says that she told Andrea not to pick her since she is stupid, to this, Matt responds saying that it doesn't change the fact that she killed her. This causes most of the group to think that Justine is the one in leagues with the evil spirit.
He goes with Eva and Sierra into the spare room to look for a lock of hair.
Episode 4 - Mannequins
Episode 5 - Freak Show
Episode 6 - Did Someone Call For An Exorcist?
Due to a failed exorcism, Matt murders Sierra, and thus, decides not to care about anybody's lives. Because of this, they all turn against him.
Episode 7 - Mermaid Tails
Matt dies this episode by failing to complete his doll house correctly, causing him to drink poison twice. He was against Tim.
- "Do you have any mints? Any gum? Mints? Mints? Mints?"
- "This girl (Lele) is the problem."
- ”I just don’t see the light at the end of the tunnel here.”
- ”I vote that everyone sucks.“