The Adventures of Sam Spade -- The Vaphio Cup Caper One of our all time favorite series, Sam Spade was well acted, well produced and well written. The character is really nothing like the Bogart movie in that the radio character had more charm, wit and humor than the film. The Adventures of Sam Spade featuring Howard Duff in the lead role, and sponsored by Wildroot Hair Oil. Enjoy this episode entitled The Vaphio Cup Caper broadcast on August 2, 1948. For more Vintage Radio shows, please visit us at VintageRadioShows.com.