Behind the Curtain: Stranger Things: The First Shadow vs Not On the Heep: The Heavy Metal Saga of Lee Kerslake
Not On the Heep: The Heavy Metal Saga of Lee Kerslake has the higher audience score (10/10 against 7.7/10 for Behind the Curtain: Stranger Things: The First Shadow). Behind the Curtain: Stranger Things: The First Shadow is the shorter watch at 1h 25m compared with 1h 34m. Not On the Heep: The Heavy Metal Saga of Lee Kerslake is the older of the two (2023 against 2025). Both are documentary movies, so they suit a similar mood.
Behind the Curtain: Stranger Things: The First Shadow2025
VS 
Not On the Heep: The Heavy Metal Saga of Lee Kerslake2023
| Behind the Curtain: Stranger Things: The First Shadow | Not On the Heep: The Heavy Metal Saga of Lee Kerslake | |
|---|---|---|
| Audience score | ★ 7.7/10 | ★ 10.0/10 |
| Year | 2025 | 2023 |
| Length | 1h 25m | 1h 34m |
| Genres | Documentary | Documentary, Music |
| Country | – | – |
| Director | Jon Halperin | Tayla Tracey Goodman |
| Main cast | Louis McCartney, Shane Attwooll, Rhys Bailey, Anika Boyle, Christopher Buckley | Eric Singer, Gene Simmons, Paul Stanley, Lee Kerslake, Mick Box |
Synopsis
Behind the Curtain: Stranger Things: The First Shadow
Join the cast and crew behind the scenes of Stranger Things: The First Shadow, the award-winning stage play that expands the Hawkins universe. The Netflix series is simply an extension of the Stranger Things universe. The documentary gives viewers a glimpse into the making of the show as it prepares for its West End premiere. The show sold out quickly and received critical acclaim. It won two Olivier Awards in 2024.
Not On the Heep: The Heavy Metal Saga of Lee Kerslake
At Heavy Metal’s dawn, the sun rose to the beat of Lee Kerslake’s powerhouse drumming. Through a career of 50 years and 60 million albums sold, he became a legend. Now he must face the end of his days. He reconnects with lifelong pals from Kiss, Ozzy Osbourne, Def Leppard, Deep Purple and Iron Maiden, and performs one last time with the band he created, Uriah Heep.
Where to watch
Where to watch Behind the Curtain: Stranger Things: The First ShadowWhere to watch Not On the Heep: The Heavy Metal Saga of Lee Kerslake
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