The 121st anniversary of the birth of Ronald Colman is a good opportunity to look at one of his most memorable movies. Lost Horizon (1937) takes us to the hidden valley of Shangri-La; what secrets are kept in this idyllic place? What mystery will be revealed by the High Lama?

Classic mystery movies are a joy to watch. They stand the test of time and prove that good acting and good story telling are what really make a movie. Here I offer a selection of my own favourite classic mysteries. Perhaps some of your favourites are here too.

The latest Sherlock Holmes movie is an action packed adventure mystery thriller. Robert Downey Jr brings a whole new Holmes to life in 'Sherlock Holmes: A Game of Shadows', but can he live up to the original great detective?

In a mistaken identity nightmare, Roger O. Thornhill becomes a man pursued. Who is the mysterious Kaplan? And whose side is the beautiful Eve really on? This continuing tribute to Cary Grant, born 108 years ago, looks at one of his best loved movies, North by Northwest.

Young, intrepid reporter Tintin must find all the clues to the riddle of the 'Unicorn'. Can Tintin, his dog Snowy and the old sea-dog, Captain Haddock, solve the mystery, when the evil Sakharine will stop at nothing to prevent them?

Although Sherlock Holmes has been portrayed by numerous actors, for many, Basil Rathbone is the definitive Holmes. Here is a glimpse of the actor, his relationship with the famous occupant of 221b Baker Street, and the series of Hollywood movies in which he brought Sherlock Holmes to life.