If you love Fauda — and of course you do — you’re in for a long wait for season four, which isn’t due to arrive on Netflix till 2022. That’s why I had such high hopes for Tehran, which is written by one of Fauda’s co-authors Moshe Zonder. What, after all, could there possibly be not to like about a hot female Mossad agent struggling to survive after a botched mission in the hostile Iranian capital, where all Israelis are seen as emissaries of ‘Little Satan’?

It starts promisingly, once you’ve got over the technical difficulties of signing up to Apple...