CONVOLUTED QUESTION:THE ANSWER
I may have to institute two prizes for this forthcoming quiz, one for anyone domiciled or born in Canada, and one for the rest of the world.
The question was:
What is the link between a cinematic recreation of a Roman slave revolt, a Turkish museum, Dr Albert Hirsch, and the odd son of antiques dealer Mogscha Rosenberg?
The cinematic recreation of a Roman slave revolt was the film Spartacus, in which Peter Ustinov won the Oscar for best supporting actor.
The Turkish museum was the Topkapi, the film of which based on an Eric Ambler story produced yet another Oscar for Peter Ustinov.
Dr Albert Hirsch was the character in the film The Bourne Ultimatum played by Albert Finney, hence the references to Saturday Night and Sunday Morning a film he starred in way back in 1960.
The "odd" son of Mogscha Rosenberg was Alfred Leonard Rosenberg, also known as Tony Randall. Tony played opposite Jack Klugman in 114 episodes of The Odd Couple.
Peter Ustinov, Albert Finney and Tony Randall all played the part on screen of Agatha Christie's detective Hercule Poirot.
"And since then -I know very well what you will say-I am like a prima donna who makes positively the farewell performance! That farewell performance, it repeats itself an indefinite number of times!" Hercule Poirot in The ABC Murders