Leonardo’s Photograph is a contemporary British comedy film noir set in the eccentric world of dealers in rare photographs, a world thrown into turmoil by the disappearance of a fabled and priceless photographic self-portrait of Leonardo Da Vinci, believed to have been produced 300 years before the accepted invention of photography. World-weary private investigator Landon Leech is approached by lawyer Robert Torrance to track down the photograph. Torrance had arranged to collect this from a courier and deliver it to his leading client, the tycoon and possible gangster Norman Slate, but when the Italian courier died of a heart-attack at Heathrow the photo was nowhere to be found. Slate suspects Torrance is involved in the theft and Torrance believes his life is at risk if Leech cannot recover the photo. Leech sets off on an investigation that introduces him to characters as various as the patrician and dangerous Osbert Brasenose, the oily and unpredictable Lolly Bamber, the dog-loving Mrs Coolidge and the mysterious, vulnerable and alluring Lilly Boyd, all somehow connected to the disappearance of the elusive photograph. While Leech’s marriage to Marjorie falls further into disarray as she grows ever closer to her Italian language teacher, Riccardo, Leech finds his search for Leonardo’s photograph mirroring his personal search for meaning in a world that has always disappointed him.