A Roblox game—⁠☆

a posseser will possess someone,the medium can check a person's brain to see if their possessed but only once, the decoy pretends their possessed to win, the exorcist who needs to burn the possessed being, if the decoy is burnt, the exorcist shall meet the same fate, the innocents who have nothing to do with this must help them solve, who is fake?

You, mark,Luke,Emma, Daniel, Michael,Alyssa, and Lexi, all in a room,all have a chair, mark is the exorcist, with Daniel the decoy,Emma the medium, Michael and Alyssa are innocent,suddenly Luke stands up and everyone watches in terror as his soul exists his boy to another person's. find who is possessed

Lexi: tbh Emma is sus Mark: how is she sus? Emma: yea how? I'm med! Michael: could you check mark?