Clue 1: Still Life '88.
Clue 2: In the chorus of the song there is a prominent example of a grammatical mode that is rarely used in present-day English (especially in spoken English).
Clue 3: The lyrics present the listener both with a number of questions (that remain unanswered), but also with a very definitive assertion.
Clue 4: David Brent once made a song about a person whose name is similar to the name given to a phenomenon that appears in (and given the timing of its creation, might have inspired) the lyrics.
Clue 5: The title of the song might be inspired by another band's name. This other band, in turn, has a song with the same title as another Maiden song.
Incorrect guesses: Still Life, Prowler, Black Bart Blues, Infinite Dreams, Die With Your Boots On, If Eternity Should Fail, No Prayer for the Dying, Hallowed be thy Name, The Apparition, For The Greater Good of God, Charlotte The Harlot '88, When Two Worlds Collide, The Clairvoyant