Strange things are said to happen on Twelfth Night, although few as strange as the ghost of a man believed drowned years earlier appearing in the midst of the town's celebration, vowing revenge on his killers. The sighting might have been blamed on the potent punch being served, but after two bodies are found, the ghost's threat has to be taken seriously. Old secrets come back to haunt more than one person as clock repairer Jacob Silver and housemaid Sarah Simm help the police follow a trail that leads to killers past and present.

'Ghost on the Green' is the fifth book in the Silver and Simm Victorian Mysteries series.