No. The story's ongoing and the resolution hasn't been written yet; The party is setup for the next part of the story and Savin's said that the Reading Comprehension Check will influence the next part. And then what MarcoPolo just said. There's some suspicious things about a lot of characters but one has more than the others: Vrannus is the one responsible for the 'gather everyone in the city and hunker down' strategy, he's the one responsible for provisioning the city including the water supply (which if you've been passing your Reading checks, you'll have reason to believe is the corruption vector), he's been taking over a lot of oversight into the running of Khor'minos and removing women from the council into his and his father's harems, he's the one who started pushing the 'wear as little as possible' dress code, he's the one who spends the start of the party fucking rather than mingling (and there's a very recently defiled statue of Tira in the chapel) and his background makes him sound like exactly the person who would be vulnerable to corruption among the pool of suspects.
Another clue that you can miss if you didn't bring the right person to the party: Someone left a weakness in the patrols that Barney was able to exploit to slip through. And it's mentioned several times that despite not showing an interest in it earlier, Vrannus has been offering a lot of strategic advice due to 'books he's read'.
Oh, and a big one that you can miss: The high priestess who the game practically tells you is Tira in disguise suspects him and gives a very solid argument for it.
