[Cal.]

A reliable source from Digital Spy (and he has been right about many things before, Finn raping John Paul, the victims for last year's Blast, Jim's death) has confirmed the deaths of #EndOfTheLine (the train crash)-

Spoiler:

Carmel and Sonny will both die in the stunt (Sonny apparently has faked his own death and makes his last stand after sneaking on the train - real big shame about Carmel, wanted her to return along with Mercedes when a better producer came along!). They're the only victims of the crash, but apparently they'll be a lot more in the hospital siege which is the main cast cull, despite what's been hyped up about the train stunt.