DI Ambrose The DI Ambrose Mysteries are set in the late 1950s and early '60s, a period of great change that seems like an era ago. Skull Days Newly promoted to Detective Chief Inspector, Ambrose leads a serious crime team, with officers including reader's favourites, DI Winters, WPC Meadows, PC Sutton, and PC Green, a rookie from London, learning country policing. When a girl goes missing from an expensive boarding school and a teacher drowns in mysterious circumstances, a chain of events develops that stretches Ambrose and his team to its limits. Skull Days is the fifth novel in the series, after Foul Play, Poison Pen, Close Disharmony and Poetic Justice.