You've received word that your business contact has information concerning your "agents", which must mean your pirate hirelings have learned something about the Trade Union turncoat. Meet with her to find out what she's learned.
According to your main contact, the pirates that you and her associate hired to investigate have returned and are waiting for you aboard your ship.
When you speak to them in an instanced version of your cabin, they'll give you a name and evidence and then they'll leave, after implying that it's a bad idea not to have more work for them. When you exit the room, they'll be standing on the deck of your ship, trying to take over. You'll have to fight both of the ringleaders (which are Lieutenant-rank NPCs) and 13 of their minions. All enemies will be level 45, and you'll have a bunch of your crewmen to help you. It's a great deal like a boarding fight, actually.
Return to your contact's associate in the second port to claim your reward.
- Defeat all Pirates: 0/15