The Chase - That Is How You Traffick People

We come to a very important milestone in our watch as The Chase is Mark's favourite 1st Doctor adventure. It's also the story in which Ian and Barbara leave - unknown to Sarah but there's at least one last chance for us to complain about Barbara's actions. 

If you're new to Doctor Who and want to discover these stories with us, Sarah watched this online via Britbox and Mark watched the official BBC DVD release.