Serial is about people in Tel Aviv (8)
I believe the answer is:
israelis
'people in tel aviv' is the definition.
I can't judge whether this definition defines the answer.
'serial is about' is the wordplay.
'about' is an anagram indicator.
'serial'+'is'='serialis'
'serialis' anagrammed gives 'ISRAELIS'.
Can you help me to learn more?
(Other definitions for israelis that I've seen before include "'They live in Tel Aviv, say (8)'" , "Nationality of citizens of Jerusalem" , "They might live in Tel Aviv, say" , "Middle-Easterners?" , "people from the Med?" .)