Currently available on 1 streaming service.

Streaming, rent, or buy Catalyst – Season 21:

Currently you are able to watch "Catalyst - Season 21" streaming on ABC iview for free.

Where can I watch Catalyst for free?

Catalyst is available to watch for free today. If you are in Australia, you can:

  • Stream 6 episodes online on ABC iview

If you’re interested in streaming other free movies and TV shows online today, you can:

  • Watch movies and TV shows with a free trial on Prime Video