What actors and actresses appeared in Sparkling Cyanide - 2003?

It seems you're asking about a movie that doesn't exist. There is no movie called "Sparkling Cyanide" released in 2003.

There is a movie called "Sparkling Cyanide" from 1968 starring:

* Dame Joan Collins

* Sir Ralph Richardson

* Nigel Patrick

* Brenda De Banzie

* James Villiers

* Catherine Schell

* Patricia Routledge

Perhaps you're thinking of a different movie? If you can provide more details, I can help you find the cast.