Kyle, who sacrificed his life for Arandor.
Sorry, I couldn't resist :D
So, Crabby was the mafia - that's undeniable.
TaCo had a baker - that's also beyond doubt.
There are two questions: what did they use to block (and did they even block) Magnus, and who killed Crabby? In my opinion, it was most likely the maniac, because the baker puts magical candies, not stabs with a saber.
So, if we assume that both Cash and Magnus were blocked, and the second maniac killed Crabby, then one of them is the maniac. Right? Of course, the maniac could have skipped a turn, but I'll never forgive myself for making a similar assumption in the previous mafia game and not executing the guilty person because of it.
Anyway, think, dig up the facts.
Where do we end up when we save the world?