• Imagine Dragons linked up with Alex Da Kid for this track, one of four Night Vision cuts that he contributed towards. The English Hip-Hop producer is best known for co-writing Eminem's hit single "Love The Way You Lie" and Dr Dre's successful tune, "I Need A Doctor."
• Alex Da Kid and the producer's engineer Josh Mosser wrote the song along with the band. It finds lead singer Dan Reynolds warning a loved one not to get too close to him as he is "dark inside." He is more than aware of his imperfections and wants to protect the loved one from himself.
• Running just 2:55, this is one the shortest hit songs of its era. It shaves time by bypassing an intro and going right into the verse ("When the days are cold..."). The song relies on its story, so getting right into it plays to its strength. The song also ends abruptly, punctuating the theme: "It's where my demons hide."
• The Night Visions album title came together organically and ties into this song. Vocalist Dan Reynolds explained: "We all sat in a room and wrote out what the band and sound of the album means to us. We all deal with our own demons and anxieties but we find that nothing calms the mind more than creating. Many of the songs on the album were written late into the night, and some of the lyrical themes came from dreams I've had, even some nightmares. So when the title Night Visions came up, it just seemed to fit perfectly. We hope it inspires other to create, and push through their own struggles."
• The song's music video depicts images of Imagine Dragons performing the song at a hometown show in Las Vegas mixed with scenes of audience members thinking about their own personal demons. Director Isaac Halasima added a snippet at the clip's conclusion showing the band dedicating their hit "It's Time" to cancer victim Tyler Robinson. The 17-year-old fan subsequently died from the illness.
• The song logged 61 weeks on the Hot 100. In doing so, Imagine Dragons became the first act to have two songs that spend at least 60 weeks on the chart ("Radioactive" spent a record-breaking 87 weeks on the Hot 100.).

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CATW