"Arden's most famous film appearance was as lead character Guy Van Stratten inMr. Arkadin(1955), written and directed byOrson Welles. Welles had worked with Arden on theHarry Limeradio series, produced in London,and later cast the little-known actor inMr. Arkadin, in the central role of the investigator who uncovers Arkadin's past. Reportedly, Arden was shocked that Welles might consider him for the part and initially thought that the director's phone inquiry was a crank call.Arden's performance inMr. Arkadinwas panned by some critics : The New York Timescalled it \"hopelessly inadequate\".The credits of one the film'sSpanishversions misspelled Arden's name as \"Bob Harden\".Another Spanish print actually credited him as \"Mark Sharpe\". After Mr. Arkadindid poorly at the box-office, Arden pursued his acting career, essentially in supporting parts. Although he played a few other lead roles, in films such asThe Depraved(1957) orThe Child and the Killer(1959), he worked mostly as a character actor, appearing in film, television and stage productions."