Is John Stape becoming Richard Hillman Mark II?

Desperation makes a man go to extremes. We've already seen John bury the body of Colin Fishwick who dropped dead at his feet. He's been ducking and diving for weeks trying to keep that from Fiz but the reappearance of his partner in mischief, Charlotte, is making that increasingly difficult. According to the Sun, he's going to kill Charlotte (probably in the heat of another argument, I'm assuming) and make it look like she was caught in the upcoming and oh, so convenient for him tram crash. This is what happened with Richard Hillman and his ex-wife Patricia who threatened to expose him. He lashed out with a spade and killed her during the argument. It wasn't pre-planned.

Later, as you will recall, his money worries increased and he did plan to kill Emily Bishop, making it look like a break in and setting up young Aiden Critchley to take the blame. Maxine came home unexpectedly and he bashed the two of them. Emily survived, Maxine didn't. John is apparently set to allegedly kill Colin Fishwick's mother in the new year and make it look like she died of natural causes. It's already been established that she has a heart condition, after all. John is getting more and more desperate that his secret stay hidden, desperate to keep his new family from finding out. When Fiz does find out, and she will because that's Soap Law, will he try to kill her and the baby along with himself? The parallels are already creeping in, I think. What say you all? How will the Stape-gate storyline finish up? Maybe you all can give the writers some inspiration!