Demi Lovato is set to discuss her 2018 overdose and her road to recovery in her upcoming documentary, in which she revealed the near-fatal incident caused her to have multiple strokes and a heart attack. 

The singer, 28, unveiled the trailer for Demi Lovato: Dancing With The Devil on Wednesday, which promises to give a no-holds-barred account of the darkest time in her life in 2018.