Katherine puts her career on the line when a terribly injured young man is brought into intensive care.
Katherine argues that a young boy with leukaemia should have a say in his treatment, but the boy's parents and Dr Tom Scott disagree.
While coping with a pregnant woman who is refusing all medical help, Katherine also finds herself opposite her QC father John as a witness in a murder trial.
Katherine Doone uncovers a bitter family battle raging over the care of a patient, and her investigations into a colleague's behaviour again brings her into conflict with Dr. Blake. (Radio Times)
A suicidal young girl who has taken an overdose is admitted, and Katherine tries to persuade her to take the antidote.
When Katherine and her boyfriend Tom go on a walking trip in Loch Lomond with her father John, she is forced to make the biggest ethical decision of her life.