For Mr Owen, whose son Ben was killed in the Great War, is desperate to speak to him again and a trio of mediums billing themselves as The Three Fates are the answer to this keen wish. However, as the candle smoke from the séance clears, Ruby finds a body and discovers that she and Mr Owen are the prime suspects.
In a desperate bid to clear their names, they must uncover the truth about the killing even as they realise someone is determined to prevent them at all costs.