 For several years, all of the members of the "Rat Pack", with the  exception of ring leader Frank Sinatra (qv), appeared as mystery  guests on the show. In fact, three of the five members  (Sammy Davis Jr. (qv), Peter Lawford (qv) and  Joey Bishop (qv)) not only acted as mystery guests, but also  served on the panel as well. Sinatra didnt appear on the show until  the 27 November 1966 broadcast when he appeared both as a mystery  guest and as a panelist. Coincidentally, the date that Sinatra  appeared on the show was a year and a couple of weeks after the  death of panelist Dorothy Kilgallen (qv), with whom Sinatra was  feuding.