"Thief" is a 1999 alternative rock song by the Canadian alternative rock band Our Lady Peace. It is the third single from their third studio album Happiness... Is Not a Fish That You Can Catch, which was released in 1999. The song was written by Raine Maida and was produced by Arnold Lanni.
Meaning of the song
Our Lady Peace said that the song was about a young girl from Kitchener, Ontario named Mina Kim. Kim had a cancerous tumor in her brain. The word thief in the song refers to the tumor. At the end of the song there is a sound clip of a young girl that is actually Mina Kim singing a "Little By Little" with Maida's wife Chantal Kreviazuk.