The trailer is now online for the fourth series of Jago and Litefoot, which is out in March.
Listen out for clips from each of the four stories, with teases of Jago's new love Abigail Woburn, the dangerous Mr Gadd, the train ride to nowhere, Professor Dark... and the mysterious Mr Kempston and Mr Hardwick.
Jago and Litefoot - Series 4 stars Christopher Benjamin, Trevor Baxter, Louise Jameson and Colin Baker and is available for pre-order now.
It's a new Who's Round, Toby Hadoke's Doctor Who 50th anniversary quest to get an anecdote about every single episode of Doctor Who to date. In this instalment, Toby looks back a full fifty years.