I'm ordered to kill the English Captain, with the two poisoned knifes. First, the two knifes automaticly de-equip and switch back to my pirates pistol once i enter/leave an area (Like a house, or a part of the city). Second, the captain is staying still at the port gate, he only starts moving when i either; throw a knife on him, or talk to him. Talking to him gives a completely empty dialogue. Not sure how it's supposed to go, but after shooting him with the two knifes, he still lives and walks in the residence. My quest does not progress.