Question: What role did the actress, who starred in the British miniseries Goodbye Cruel World, play in the BBC drama "Waking the Dead"?
Sentence (from "Goodbye Cruel World (miniseries)"): Johnston played the character of Barbara Grade, a woman who is diagnosed with a terminal degenerative illness, and the series focused on how Barbara and her family and friends deal with her worsening condition.
Relevant evidence: No