Towards the end of his movie career, Elvis Presley made Clambake (1967); it was number 25 of 31 total feature films he would make.
Co-starring Shelley Fabares, Will Hutchins, and Bill Bixby, Clambake is a rock ‘n roll twist on Mark Twain’s The Prince and the Pauper. Presley is a rich oil heir who switches places with Hutchins, a humble water-ski instructor in Miami.
Presley promptly falls for Fabares, a gold-digger with her sights originally set on snagging the wealthy playboy James J. Jamison III, played by Bill Bixby.
The competing suitors must eventually settle their score in the most logical way possible: a speed boat race. TCM.