Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Silence of the Grave confirms Indridason's mastery of the genre

This is the second Reykajvik murder mystery I have read and it certainly lived up to its predecessor, Jar City. Pacey, chilling ( not just because of its setting) and very inventive, Indridason is up there with the other Scandinavian authors of the moment