Well it was all pointing to Dan being the Killer and his blackouts would be enough to convince him of some selfdoubt.
Going by the rules of soap, Toby being a bit posh, had to be evil.
Toby's erratic behaviour recently established his unsettled mental state. His mother's appearance lately went some way to explain his problems.
However, i heard that maybe toby wont be the only 'murderer' this week...