Limit what people can see - client reviews included

Hi all,
I have a project that include episodes - I’d like to be able to lock off other episodes to everyone else, and only have specific people have read access to a particular one. Can this be done?

I also need a solution to sharing media to the team, without them being in the project. I thought client review was the answer but it turns out they need access to the project for me to add them into reviews?

It’s a tricky situation but I’m struggling to find a way around this.

Client reviews should work. You don’t need to add them to the project but you do need to create client accounts using their email addresses.
From there you need to create playlists of the media you want to share and then add the recipients as clients to that playlist and share it.
They will get a media review link in their email inboxes and not have access to the full site.