Published between 1995 and 2000, the novels "Chaga" (US title "Evolution's Shore") and "Kirinya", with the novella "Tendeléo's Story", form the 'Chaga Saga', which chronicles the effects of an alien flora introduced to Earth, and also analyses the AIDS crisis in Africa. The protagonist is Ulster journalist Gaby McAslin, whose outsider's eye both observes the African landscape and sees what the "UN quarantine zone" is doing to Kenya and Kenyans. Gaby's story, with that of her daughter, continues in "Kirinya". "Tendeléo's Story" is seen through the eyes of a young Kenyan girl who escapes to the UK, only to be deported back to Kenya as an unwanted alien.