Lady in Cement

Lady in Cement is a 1968 Neo Noir detective film, directed by Gordon Douglas and starring Frank Sinatra, Raquel Welch, Dan Blocker, Martin Gabel and Richard Conte.

While diving off the Miami coast seeking one of the eleven fabled Spanish Galleons sunk in 1591, private investigator Tony Rome Frank Sinatra discovers a dead blonde, her feet encased in cement, at the bottom of the ocean.Rome reports this to Lieutenant Dave Santini Richard Conte and thinks little more of the incident, until Waldo Gronski Dan Blocker hires him to find a missing woman, Sandra Lomax. ........

Source: Wikipedia