The song was released on 15 September 2015, as the fourth and final single from the band's fifth studio album Human.
[1] Three Days Grace's drummer Neil Sanderson said "Fallen Angel" was about his mother's grief after the deaths of his brother and father when he was five years old.
[3] The video begins with singer Matt Walst stating, "This song is about losing the people we love and wishing we could have been the ones to save them.
"[4] Lyrics are overlaid atop the band's live performance at the Bomb Factory in Dallas, TX.
[5] In 2016, Sanderson said the band created a page on their official website entitled the "Fallen Angel Dedication Wall" where messages can be posted in memory of loved ones.