SERIES PREMIERE: Jenna Banns, who created Scandal, is behind this other addition to the ABC Thursday night lineup – and that ought to be enough information right there, for some people to decide to watch and for others to safely avoid. Its basic premise is this: a young boy disappears, and a sex-offender neighbor is convicted of murder – but then, 10 years later, a young man claiming to be that same boy suddenly reappears. What happens to the murder conviction? And to the rest of the