If the premise is rather simple and ordinary–an American diplomat falls in love with a stowaway on a cruise–the cast is not, featuring prominently its stars Brando and Sophia Loren.

Bradley Cooper is at the helm of the upcoming Ocean’s prequel, in which he will also star alongside Margot Robbie.

Troy Donahue, who plays a small part, would become a major youth star the following year, after the release of the medlodrama A Summer’s Place.