The first documented female serial killer in the U.S. came out of the tiny state of Delaware, as did a “signature killer” who attracted FBI profilers. Political intrigue winds though an unsolved mystery in Wilmington, while a high-powered attorney ruins his life to punish his mistress. We have poisoners and bludgeoners, and some privileged teenagers killing their baby. The corridor state between New Jersey and Maryland might be small, but it has harbored some very dark characters.