| The Sword Thief | |
 | |
| Author | Peter Lerangis |
| Main Setting(s) | Venice, Italy; Tokyo, Japan; Various locations in South Korea |
| Publication date | March 3, 2009 |
| Pages | 160 |
| Series | 39 Clues |
| Preceded by One False Note |
Followed by Beyond the Grave |
Summary[]
A Deadly Alliance
"There's only one rule in the race to find 39 Clues hidden around the world: TRUST NO ONE. But when the hunt leads fourteen-year-old Amy Cahill and her younger brother, Dan, to Japan, their only chance to find the third Clue seems to lie with their unreliable uncle, Alistair Oh. Will they be foolish enough to make an alliance? With a Clue on the line, Amy and Dan might not have a choice. But in the Cahill family, trusting your relatives can get you killed..."
The Sword Thief is the third book of the first series, and is known for the introduction of Amian.