By Nick Warburton. Frank brings a pet rabbit home. Mum gives Bobby's hutch pride of place in the sitting room. But who finished that last clue in yesterday's crossword? It wasn't mum. Frank ...... Mackenzie Crook Miss Bradfield ...... Emerald O'Hanrahan Mum ...... Kate Layden Sophie ...... Tessa Nicholson Mr Vincent ...... Bruce Alexander Directed by Peter Kavanagh.