Rev. Robin Sage dies after eating a meal prepared by Juliet Spence, an expert herbalist who should know the difference between wild parsnips and deadly hemlock.
After the love child of a Liberal black MP and a white conservative newspaper editor is kidnapped, they're blackmailed into publishing details of their affair.
Tommy and Helen go to his family estate for their engagement party, but long-hidden family secrets and a murder in the extended family disrupt the celebration.