Sudden and Vivid Memory of a Past Event

This page is the CodyCross answer for the clue below from Train Travel, Group 709, Puzzle 1 (The Polar Express).

Question is: Sudden and Vivid Memory of a Past Event

and the answer is: FLASHBACK

Word Meaning:

FLASHBACK — (authorship) A dramatic device in which an earlier event is inserted into the normal chronological flow of a narrative.

Definitions from Wiktionary.