I Know You (Destiel)

~This is a Maximum Ride-ish Destiel AU~

Ever since Castiel was little, he lived in a cage. He was experimented upon, along with others like him; people who had been genetically engineered to have wings. Finally, with the help of one of the lead scientists, Chuck, Cas and his friends escaped. However, trying to blend in proves more difficult than they originally thought, and soon something happens that puts the "family" at risk. In order to stay hidden, someone makes a big decision that changes their lives forever.