The following time, is gripped by an awful fear (5)
I believe the answer is:
Here is my best explanation:
'the following' is the definition.
(I've seen this in other clues)
'time is gripped by an awful fear' is the subsidiary indication.
'time' becomes 't'.
'is gripped by' means one lot of letters goes inside another.
'an awful' indicates an anagram.
'fear' is an anagram of 'afer'.
't' going into 'afer' is 'after'.
(Other definitions for after that I've seen before include "In pursuit of, behind", "In the time following", "Subsequent to", "Following, consequent to", "Subsequently", "In quest of; behind", "In honour of", "Later in time", "Following - behind" and "Behind; in quest of".)