The primary setting of Don't Look Behind You by Lois Duncan is the small Florida town, Grove City, which the Corrigan family escapes to under the guidance of the Federal Witness Protection Program. Although the story begins in Norwood, Virginia, the family must move to Florida, swiftly changing their identities to hide from the merciless hitman, Mike Vamp.
The family moves into a much smaller home than their previous one, and although April really dislikes it, her little brother delights in how the rooms have attic access panels; he can pretend they are secret passages. Later, the Corrigan family's house plays an important role in the climax of the novel. April tricks the hitman into locking her into the closet because she knows that she can use the 'secret passage' into the attic from which she can escape and warn her family.