Not very widely known, I suspect. The speaker is Detective (Chief) Inspector Pete(r) Pascoe, of Mid-Yorkshire Constabulary, from the Dalziel and Pascoe books by the late Reginald Hill. The gentleman at the other end of the telephone is Detective Chief Inspector Reg(inald) Wexford, of Mid-Sussex Constabulary, from the Inspector Wexford books by Ruth Rendell.