Heaven's a Lie is the first single by Lacuna Coil off their album Comalies. Although frequently labeled as an anti-religion song, such an interpretation is mistaken. In an interview with HighWireDaze.com, leading vocalist Cristina Scabbia explained the meaning of the song. The word "heaven" is a metaphor for a "perfect life". When the phrase "your heaven's a lie" is used, it is referring to people who try to force their opinions on others.
Co-vocalist Andrea Ferro refers to this theme at their concerts as a song about freedom of ideas.
Amidst the single's newfound popularity in late 2003, the group performed an acoustic version of it during an edition of MTV2's Headbangers Ball.
The song is used on a comercial for the TV show Criminal Minds.