On Mollel's return from Hell's Gate he is put on duty in Dandora, a Nairobi slum infamous for its teeming rubbish dump - home to scavengers and shadowy rulers - and Night Runners, who are said to be possessed by the devil. While witnessing a near-riot, Mollel is approached by a young girl called Miriam who is refusing to speak to anyone other than the 'Masaai cop'. Miriam's sixteen-year-old sister Fatima has disappeared, and Fatima's school and father - an ambitious local councillor - seem to be covering something up.
So begins an odyssey into Nairobi's underworld which will take Mollel - aided by his streetwise son Adam - from rap clubs to voodoo healers, as the detective tries to find the missing girl and come to terms with his fractured past in a city where no one will tell him the truth.

It must have been someone's idea of a joke. Too many offended egos back at headquarters, too many influential people unhappy with him in Nairobi. And yet, with his record, almost impossible to dismiss. So where had they sent Mollel? Straight to Hell.

When Mollel, a former Maasai warrior turned detective, ends up in a small, fly-blown town on the edge of a national park, it looks as if his career has taken a nose-dive. His colleagues are a close-knit group and they have not taken kindly to a stranger in their midst. Mollel suspects they are guilty of the extortion and bribery that plague the force, but when the body of a flower worker turns up in the local lake, he wonders if they might be involved in something more disturbing...

For all is not as it seems in Hell's Gate. Amid rumours of a local death squad, disappearances and blackmail, Mollel is forced not only to confront his Maasai heritage, but also to ask himself where justice truly lies. In upholding the law, is he doing what is right?

'A compulsive whodunnit set in Kenya, where tribal politics can get you killed' Ian Rankin

Death is a fact of life in Africa's sprawling megacity - and life is cheap. Power and wealth are in the hands of a small elite. Riven by ethnic tension, Nairobi is a tinderbox. And the looming presidential elections have set sparks flying . . .

When the brutalised body of a Maasai woman turns up in a park, the overworked police write her off as another dead prostitute. But Mollel - a good cop in a corrupt system - senses there is more to the case.

When riots sweep through the city, Mollel puts his job and his family on the line. But this time he may have got too close . . .