Grayson had always preferred hunting alone. Ever since her family was killed long ago, she knew she wouldn't be able to cope with another loss, so she refused to grow attached to people-- up until she met another hunter. From the moment she set eyes on Dean Winchester she knew something about him was different, and when she meets Sam and Castiel, she finally feels like she belongs. Grayson travels with the boys, and slowly falls for Dean, but refuses to admit it, afraid of hurting him. And just as things were looking up, they take a turn for the worst when she starts having visions, the first vision being triggered by looking at Castiel. She knows he's hiding something from her, the question is- what? Even the brother's are curious, but the angel says he knows nothing, and once all is revealed, Grayson 'prays' that the three still have her back, all the way through to the end.