The party met Jarinov twice.
During the first meeting he and had words with one of the paladins and then challenged that paladin to a duel. The paladin avoided the challenge and threatened to kill Jarinov 'later'.
During the second meeting Jarinov was about to be killed by the barbarian but bought his life by showing the party where Belishan's treasure was and promising not to bother them again.
That was about 50 game days ago (lot's of crafting and travel to sell the palace from Belishan's treasure) and Jarinov has use that time to invite the gnolls into the crooked tower (they are now well established)and to move himself to Bard's Gate. At some point he will frame the paladin for a murder and try to instigate a trial by combat in the public street. I'm hoping to keep the paladin completely off balance and then hit him with a "remember me punk?" from Jarinov.