The Similarity Engine

Roanoke Island, 1590. The TARDIS materialises in the past, and the Doctor's companions, Professor Litefoot and Henry Gordon Jago, find themselves prisoners of the natives in the New World. But there's something something strange here - stranger than even the colonists, led by Englishman John White. What are the ghostly children? And who is the Old Man of Croaton? The travelle...

Professor Litefoot and Henry Gordon Jago are accustomed to the murky fog of Victorian London and the palatable pints of half and half at the Red Tavern. They are not used to travelling through time and space with their old friend the Doctor. And now they find themselves whisked off to the planet Venus in the distant future, at a time when warrior women rule from a floating city in the clouds. T...

Jago, Leela and Ellie take a trip to the theatre to see Oscar Wilde's new play and discover something sinister during the interval. Meanwhile, bodies are turning up at Litefoot?s lab, while Wilde meets his biggest fan...

When Litefoot?s home is invaded by giant metal spheres, it seems that the end of the world is nigh. The enemy has revealed itself, the end game is afoot - can two Henry Gordon Jagos save the day?

A friend from the past returns to warn Jago and Litefoot of a threat to the future. Time breaks are appearing in Victorian London, but first Leela must help solve the mystery of the Wet Men - terrifying creatures that are rising from the River Thames?

Escaping the shadowy presence of the mysterious Professor Claudius Dark, Jago, Litefoot and Leela take a holiday in Brighton. There, Jago meets and falls for music hall singer Abigail Woburn, a relationship that threatens to split the infernal investigators apart, as dark forces gather on the beach?

Women are being killed on the streets of London, and the evidence points to it being the work of a vicious vampire. This should be a case for Jago and Litefoot but - to the astonishment of Jago - the esteemed investigators of infernal incidents have gone their separate ways. It's now a case for Litefoot and Sanders - but Jago isn't going to go away quietly...

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?

Jago and Litefoot visit Moorsey Manor, hoping to get help from the only man who can help them clear their names. They arrive at a gathering of Sherlock Holmes fans, who are mourning the death of their idol at Reichenbach Falls. Then death arrives at Moorsey Manor, in the most ingenious of ways…

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...