Watch Dogs Episode 18: Little Sister

"After Aiden kills Defalt, he gives a phone call audio recording to T-Bone to reveal a conversation in the background. After a scan, Aiden finds Nicky in an abandoned building in Brandon Docks."
"After saving Nicky from Damien's clutches, Aiden decides that Nicky and Jackson leaving Chicago will be the best thing to do, for their own safety."