Simon MacCorkindale made a big splash in Death on the Nile as the charming and impoverished Simon Doyle, the who in this Agatha Christie whodunit. The twenty-five-year-old actor established a reputation in British television in productions such as “I, Claudius,” Romeo and Juliet, and Franco Zeffirelli’s “Jesus of Nazareth.” No stranger to London’s West End, MacCorkindale has joined forces with his actress-wife, Fiona Fullerton, to form their own company