The first time I saw this was in summer in a cinema where the air conditionong was broken down. It gave it that extra Egyptian feel and smell.
I like Ustinov's Poirot as much or more than any other. Like a good Agatha Chritstie epic it is......long. Use need an intermission to go stretch your legs, have a piss, buy a choc ice that sort of thing.
7/10