My guess is that it'll be Ronan and that's when the truth about who he is will come out. I don't think it'll be Chance or Heather - neither of them make much sense. The dealers are already suspicious of Ronan and I think he's walking into a trap. I wonder if he'll be trying to protect Chance and get shot himself and while he's in the hospital, the aged-progression artist will hand Nina and Paul the picture of Ronan. It just seems so soapy that way - lol! Nina finds her son, only to wonder if she'll loose him. Chance realizes the guy he hates, who's lying in a hospital bed, took a bullet meant for him, and is his brother, and so on.

My guess is it will be Chance.