The Rat Pack was an informal group of entertainers centered on the Las Vegas casino venue. They originated as a group of friends who met at the Los Angeles home of Humphrey Bogart and Lauren Bacall. In the 1960s, the group featured href=”https://en.wikipedia.org/wiki/Frank_Sinatra”>Frank Sinatra, Dean Martin, Sammy Davis Jr., Peter Lawford, and Joey Bishop among others. They appeared together on stage and in films in the early 1960s, including the movies Ocean’s 11, Sergeants 3, and Robin and the 7 Hoods (Bing Crosby replaced Lawford in the last movie). Sinatra, Martin, and Davis were regarded as the group’s lead members after Bogart’s death.