The furthest station
(Book)

There's something going bump on the Metropolitan line and Sergeant Jaget Kumar knows exactly who to call. It's PC Peter Grant's speciality ... Only things are more than just going 'bump'. Traumatised travellers have been reporting strange encounters on their morning commute, with strangely dressed people trying to deliver an urgent message. Stranger still, despite calling the police themselves, within a few minutes the commuters have already forgotten the encounter - making the follow-up interviews rather difficult. So with a little help from Abigail and Toby the ghost hunting dog, Peter and Jaget are heading out on a ghost hunting expedition. Because finding the ghost and deciphering their urgent message might just be a matter of life and death.

There have been ghosts on the London Underground, sad, harmless spectres whose presence does little more than give a frisson to travelling and boost tourism. But now there's a rash of sightings on the Metropolitan Line and these ghosts are frightening, aggressive and seem to be looking for something. Enter PC Peter Grant junior member of the Metropolitan Police's Special Assessment unit a.k.a. The Folly a.k.a. the only police officers whose official duties include ghost hunting. Together with Jaget Kumar, his counterpart at the British Transport Police, he must brave the terrifying the crush of London's rush hour to find the source of the ghosts. Joined by Peter's wannabe wizard cousin, a preschool river god and Toby the ghost hunting dog their investigation takes a darker tone as they realise that a real person's life might just be on the line. And time is running out to save them.