a US television series (1959–65) which each week had a different strange story with a surprising ending. There was also a film (1983), and another television series, The New Twilight Zone (1985–9). The phrase ‘in the twilight zone’ is still used in American English to describe something mysterious.
TWILIGHT ZONE
Meaning of TWILIGHT ZONE in English
Oxford guide to British and American culture English vocabulary. Руководство по британской и американской культуре, Оксфордский английский словарь. 2005