The Borgified Corpse wrote:
Sybil's death was sad but not altogether unexpected because you could tell that the writers had run out of ideas for her after she married Branson.
But I fear that Matthew's death may be a crippling blow to the series.
Apparently both actors wanted to leave. Interesting interview here says in part
Was it your decision to dispense with Sybil and Matthew in the same season?
No. You see, in America, itís quite standard for an actor to sign, at the beginning of a series, for five or seven years. The maximum any British agent will allow you to have over an actor is three years. And Jessica and Dan wanted to go.