Place your bets with these old time radio mysteries involving gamblers and the (sometimes) crooked games they play. Sherlock Holmes and Dr. Watson find murder among the roulette tables of a French casino in "The Case of the Double Zero," starring Basil Rathbone and Nigel Bruce (originally aired on Mutual on November 19, 1945). Philip Marlowe tries to find a friend's stolen IOU but stumbles across a corpse during the search in "The Promise to Pay" (originally aired on CBS on May 14, 1949), and Nero Wolfe is hired to find out who dealt a deadly hand during a poker game in "The Case of the Killer Cards" (originally aired on NBC on January 12, 1951). Finally, Sgt. Joe Friday hunts for the man who's impersonating a cop to extort money from gamblers in "The Big Shakedown" from Dragnet (originally aired on NBC on May 22, 1952).