The conversation between human and AI assistant.
[|Human|] Provide a short summary of Ian Leslie Campbell's first three books.
[|AI|] Ian Leslie Campbells first three books were "The Plot to Kill Graziani", "The Massacre of Debre Libanos", and "The Addis Ababa Massacre". Each of the books are about violent attacks on people.
[|Human|] 
Provide a short summary of Ian Leslie Campbell's first three books.