Frank Sinatra said that he knew a girl that used to date bullfighters, a reference to his ex-wife Ava Gardner's affair with a matador when filming The Barefoot Contessa (1954) in Spain.
The character Tony Rome appeared in three novels by Marvin H. Albert in the early 1960s: "Miami Mayhem" (filmed as Tony Rome (1967)), "Lady in Cement," and "My Kind of Game."
When Tony Rome (Frank Sinatra) walks into the room in the massage parlor where Waldo Gronsky is, Gronsky (Dan Blocker) is watching Bonanza (1959), in which he played Hoss Cartwright.
When Tony Rome gets in the taxi by the airport, on the side of the cab, there is an advertisement for fellow "Rat Pack" member Dean Martin's restaurant on the 79th Street Causeway.
As Tony Rome (Frank Sinatra) is running from the Police on the beach, a band can be heard playing the Sinatra song "You Make Me Feel So Young."