Daylight Intruder — Jerry B. Jenkins

Someone has been entering Karlyn's apartment for some unknown reason, leaving subtle hints of the visit -- a closet light left burning, a poster turned around to face the wall, an empty milk bottle in the refrigerator.

Is Karlyn imagining these things?

What will she find the next time she opens her apartment door?

Karlyn seeks Margo's help in unraveling the secret of these mysterious visits.