Jago & Litefoot: Series Six

 was a full cast audio anthology released on September 2013 by Big Finish Productions. It starred Christopher Benjamin as Jago and Trevor Baxter as Litefoot. After spending Series Five in the 1960s, this series saw the two returning to their original time period.

Publisher's summary
6.1 The Skeleton Quay by Jonathan Morris

Henry Gordon Jago and Professor George Litefoot are back in the familiar fog-shrouded streets of Victorian London, but a new calling awaits them... The Colonel, an emissary of Queen Victoria herself, reveals that their services are required by Her Majesty - and their first assignment is to investigate a series of ghostly apparitions at Shingle Cove...

6.2 Return of the Repressed by Matthew Sweet

Henry Gordon Jago is troubled. He's having disturbing dreams and the waking hours aren't much better...

Only one man can help - renowned Austrian mental pathologist Sigmund Freud. But even Freud isn't prepared for what he will discover in the mind of an infernal investigator...

6.3 Military Intelligence by George Mann

There are Sentinels on the streets of London, killing without mercy. And as a web of intrigue unfolds, Jago and Litefoot move closer to confronting the enemy of the Crown. A battle to the death will demand the ultimate sacrifice...

Can this be the end of Jago and Litefoot?

6.4 The Trial of George Litefoot by Justin Richards

Professor Litefoot stands accused of murder, and the court is determined to find him guilty. With fire about to rain down on London, Litefoot's only salvation lies in the most unexpected hands...