S4 Ep5 Murder and millions: Who killed Abraham Shakespeare?

When Abraham Shakespeare won $17 million on the lottery that should have meant the end of his worries. Unfortunately for him what it actually meant was a lot of people holding their hands out to get a cut. When he is killed in mysterious circumstances only a couple of years later the focus soon turns to a strange woman who seems to have befriended him quite recently. Did DeeDee Moore have anything to do with Abraham's death or is the reality even stranger?

Intro/outro "Sugar Sugar" By Fast Lady