Grandpa?
Edward M. Lerner
CryoBurn
Lois McMaster Bujold
Vorkosigan Saga (20)
Adventures of Huckleberry Finn
Mark Twain
Murder in Mesopotamia
Agatha Christie
Hercule Poirot Mystery (14)
Tintin and the Picaros
Hergé
Tintin and the lake of sharks
The Seven Crystal Balls
Prisoners of the Sun
The Black Island