Demi Lovato: Dancing With the Devil review –a pop music doc of shattering candour

The trauma and even duplicity of US pop singer Demi Lovato, who suffered a near-fatal relapse into drug addiction, is shown in unflinching detail by film-maker Michael D Ratner

There's a line that gets trotted out every time a supposedly explosive celebrity documentary is released: no topic was off-limits. Of course, given the often manicured, constructed nature of these films, and the fact that they're often produced by the subjects themselves, gory or unpalatable details can be sanitised.

That's not the case with Demi Lovato: Dancing With the Devil. Covering the build-up to, and the aftermath of, the pop star's accidental overdose in the summer of 2018, which left her hospitalised and fighting for her life, the four-part series is harrowing and unflinchingly honest.