The Sea of Trolls is a fantasy novel for children, written by American author Nancy Farmer and published by Atheneum in 2004. It inaugurated the unofficially titled Sea of Trolls series, which Farmer continued in 2007 and 2009.

Plot summary
The Sea of Trolls is set in Anglo-Saxon England, Scandinavia, and the mythical realm of Jötunheimr.

Jack Crookleg, the main character of the book, is being trained by a famous skald (bard) named Dragon Tongue, when he and his younger sister, Lucy, are captured by Viking raiders. The pair are to be sold as slaves to "Picts" as soon as they reach land. On board the Viking ship Jack meets and ultimately befriends Thorgil, a young would-be berserker, and Olaf, the leader of the raiders, along with Boldheart, the crow. The two captives are spared because Jack is a bard and because Lucy is to be given to the queen, a half-troll named Frith.
    
When they arrive at the court nothing goes as planned. Jack is sentenced to menial labor and made to clean the barn. There Jack encounters the deadly troll-pig, Golden Bristles, who is to be sacrificed to the goddess Freya by being placed in a wooden cart and left to sink in a bog. After singing Olaf One-Brow's praise-song for the Northman's homecoming, Jack inadvertently makes Queen Frith lose her hair. Queen Frith threatens to sacrifice Lucy (instead of the troll-pig) to the goddess Freya, because Jack set Golden Bristles free. However, Frith allows Jack a chance to save Lucy and their freedom if he can make her hair grow back, which is much more difficult than she makes it sound. Jack goes with Olaf and Thorgil to Jötunheimr, land of the Trolls, to seek the mythic Mimir's Well, a well with magical water (song mead) which gives the drinker knowledge, at the roots of the world tree Yggdrasil. Olaf One-Brow is killed by a "trollbear," a gigantic bear native to Jötunheimr. Jack and Thorgil are captured by a dragon, but Bold Heart tricks the dragon and enables Jack and Thorgil to escape. Thorgil slays the baby male dragon but gets some blood on her tongue, allowing her to speak with birds. On the way Jack also visits the queen of the jötnar (equated in the book with trolls), as he needs her consent to continue seeking Mimir's Well. He finds the tree Yggdrasil and Mimir's Well. Both he and Thorgil drink from the well, and Jack saves some for Rune, a skald (bard) who teaches Jack poetry. With the knowledge Jack gains from drinking from Mimir's Well, he returns to the land of the Northmen to restore Frith's hair.

Upon return, Jack and Lucy are summoned to the court. Jack explains to Queen Frith that she needs to cut off one third of the hair from her troll cats but no more to restore her hair. She doesn't listen and cuts all of the cats' hair off. As a result, Frith's hair grows everywhere not just back on her head. She runs off crazed.

Later Olaf's oldest son commands the ship and takes Jack and Lucy back to their village. Jack finds his mother and learns that Dragon Tongue has been crazed ever since Jack and Lucy's kidnapping. He goes to see Dragon Tongue with Bold Heart and Dragon Tongue's(the bard) heart stops beating. Jack gives Dragon Tongue the remaining mead from Mimir's Well and he comes back to life. Dragon Tongue tells him that he became a crow during the voyage, ending the book.

See also
Jötunn
List of Germanic deities
Norns
Beowulf
Ivar the Boneless

References

External links

2004 American novels
2004 fantasy novels
Children's fantasy novels
Novels by Nancy Farmer
Novels set in the Viking Age
The Sea of Trolls Trilogy
Novels set in the 8th century
American young adult novels
Atheneum Books books