The Lightning Thief is followed by The Sea of Monsters, in which Percy and Annabeth rescue Grover, who has been taken by Polyphemus the Cyclops, and recover the Golden Fleece to save the camp. They are accompanied in this mission by Percy's Cyclops half brother, Tyson, and by Clarisse La Rue.
Like The Lightning Thief, it won several prizes and received generally positive reviews as well.[4][50][51] It sold over 100,000 copies in paperback.[52] It was followed by The Titan's Curse, The Battle of the Labyrinth, and The Last Olympian as well as an entire new sequel-series, The Heroes of Olympus, and later, The Trials of Apollo.
