Eliot returned and called the queen an alien? (8)
I believe the answer is:
stranger
'an alien?' is the definition.
(I know that alien can be written as stranger)
'eliot returned and called the queen' is the wordplay.
'eliot' becomes 'ts' (poet TS Eliot).
'returned' shows that the letters should be reversed in order.
'and' is a charade indicator (letters next to each other).
'called' becomes 'rang' (called on the phone).
'the queen' becomes 'ER' (abbreviation for Elizabeth Regina).
'ts' reversed gives 'st'.
'st'+'rang'+'er'='STRANGER'
(Other definitions for stranger that I've seen before include "Person one is not acquainted with" , "Alien, foreigner" , "someone making nuisance call?" , "'Fact is ........ than fiction'" , "Outsider" .)