You can watch "Under the Boardwalk" on several platforms:
- Streaming on Netflix, where it is available to watch with a subscription
- Streaming on Sky Go and Now TV Cinema in the UK
- Available to buy or rent digitally on Amazon Video, Apple TV, Microsoft Store, Fandango At Home, and others
- Available on Prime Video Store in Australia and other regions for purchase or rental
- Also available on Max (HBO Max) for streaming
So depending on your location and preference, you can either stream it on Netflix or Now TV, or buy/rent it digitally on platforms like Amazon Video or Apple TV
