Liverpool Sound and Vision Rating * * * *

Cast: Colin Baker, Nicola Bryant, Siobhan Redmond, Andrew Bone, Becky Wright, Mike Noble, Charlie Morton.

In the saddest of circumstances comes lightness, it just may take a while for the listener to see it for what it truly is.

When a much loved actor from a television programme passes on it can be hard to imagine anyone playing their character again. In the world of soap-operas they could, if they so desired perhaps get away with an actor coming in a year or two later having had facial surgery or recovering from a major operation. In others, the character would just be allowed to be retired and thought of with ceremonial fondness every now and then. In science fiction though, the sheer possibilities are endless and enjoyable.