Dean —, actor who played the title role in 1990s US television series The New Adventures of Superman (4)

I believe the answer is:

cain

(Other definitions for cain that I've seen before include "Eldest son of Adam, Eve" , "First son" , "Eve's firstborn" , "Slayer of Abel" , "The first known murderer" .)

I've seen this clue in The Mirror.

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