The Benefactor
Mason notices Liam's strange behaviour when Liam runs three miles to get to school instead of getting the bus. He notices that Liam's leg has healed. Mason invites the entire freshman year to Lydia's lakehouse when Liam texts him about the 'party'.
I.E.D.
Mason is seen working out with Liam in the school's gym. He tries to calm Liam down when Liam finds out that the lacrosse match is against Devonfort Prep, Liam's old school. At the game, Mason tells Liam that he can take Brett on. Mason admits to Liam that he thinks Brett is hot. They both laugh it off.
Orphaned
Mason is disturbed by the fact that Garrett and Violet are professional killers using him and Liam as cover. He alerts Coach Finstock about Liam's dissapearance when he is kidnapped by Garrett.
Perishable
Mason notices Liam's strange behaviour over the Deadpool. At the annual bonfire, he tells Liam that he wants to no what going on with him, but he also wants to help Liam. When Scott, Liam and Malia are unwell at the bonfire, Scott tells Mason that it's the music affecting them. The assassins wired a sonic weapon into the music. It was weaking them because of their sense of hearing. The assassins, posing as security guards, take Malia, Liam and Scott away, Mason is concerned. He pulls the plug to the music player. He unknowingly saved Scott, Malia and Liam from burning to death.
A Promise to the Dead