Dr. Helena Bellew is charged with murder in the care of an elderly cancer patient after his family learns that the doctor is to inherit the old man's estate. She is accused of administering an overdose of pain killers but the science is not clear cut on the issue. Judge Deed's handling of the case brings him again into conflict with Sir Ian Richardson and the Lord Chancellor's Department. In family court, Judge Deed hears the case of an HIV-positive woman who refuses to allow her child to be tested. The local council takes the child into care as a result. Deed's father is slowly dying and wants to tell him something important but lapses into a coma before he can do so. It's left to Deed's sister to tell him a family secret that affects him greatly.