[The Hardy Boys 110] • The Secret of Sigma Seven
![[The Hardy Boys 110] • The Secret of Sigma Seven](/cover/whysUTxoFexqzior/big/[The%20Hardy%20Boys%20110]%20%e2%80%a2%20The%20Secret%20of%20Sigma%20Seven.jpg)
- Authors
- Dixon, Franklin W.
- Publisher
- Turtleback Books
- Tags
- mystery , childrens
- ISBN
- 9780613102858
- Date
- 1991-10-01T00:00:00+00:00
- Size
- 0.12 MB
- Lang
- en
The aliens are invading! No, they're not from another galaxy. They're not even from Mars. They're from Hollywood! A science fiction convention has come to Bayport, and movie director Simon Devoreaux has lost his billion-dollar baby: the film of his latest blockbuster has dematerialized before his eyes.