Arthur received his information at the same time as the other initiates. He's relieved that his target seems fairly normal - not a biotic or a salarian. He's had to covertly research how one might kill a turian, but he's confident he has a way to make it look like something gone wrong. He might need a new gun, though, since he only has his old regular caliber one.

Then a couple nights after he gets a knock, and he pauses as he's starting to take something out to eat. He goes over and presses the button for the intercom.

"Who is it?"