Mark of the lion

the long version

An ambulance driver during WWI, Jade del Cameron promises a dying soldier that she'll track down his brother. The only problem is that the soldier's mother, whom Jade goes to visit in London, insists that she had only one son. Jade reasons that the missing brother must have been born to another woman, conceived when the now deceased family patriarch was exploring East Africa. So off she goes to Nairobi, where she mingles with the colonial elite, kills a hyena, learns Swahili, fingers a drug smuggler, romances a man twice her age, uncovers a murder and attracts the attentions of a local witch.