The Mystery of the Indefatigable Ink

Jupiter's trip to the local hardware store seems like an ordinary errand - until a chance meeting with Mrs. Vasiliev, an elderly Russian woman who fled the Soviet Union in the 1980s, puts him on the track of a brand-new mystery. Mrs. Vasiliev asks Jupiter to help a young Russian-American songwriter named Ivan Fedorov, who's being threatened with a bogus plagiarism lawsuit.

At first, the case seems straightforward, but as The Three Investigators dig deeper, they uncover a complex and intriguing web of family history. Ivan's great-grandparents fled the Soviet Union during the Russian Revolution, and his great-grandfather, Fyodor, an Oscar-winning Hollywood actor. Fyodor's son, Vadim, was blacklisted in the 1950s during the Red Scare after being falsely accused of being a Soviet agent. But Vadim reinvented himself as the wildly successful mystery writer, Edison Ford, winning multiple Edgars from the Mystery Writers of America.

Vadim's final manuscript, however, is missing. He had completed it just before his death - a literary novel about his parents' escape from the Soviet regime - but despite years of searching, it's nowhere to be found. The investigation reveals that the manuscript may not be as lost as everyone thinks - but someone is determined to keep it hidden. An old-fashioned card catalogue has been rifled - though a 1930s movie, Dawn Over Petrograd, holds hidden clues.

In the end, the hunt for the missing manuscript leads The Three Investigators to the American Film History Library where they must race against time to recover it. But when the manuscript falls into the wrong hands, the team faces dangerous opposition. Who is behind the plot to keep it buried ? To what lengths will they go to protect their secret ? And can Jupiter, Pete, Bob, and Mallory uncover the truth before the manuscript is lost forever ?

1. Jupiter Has His Work Cut Out For Him
2. A Family Of Fedorovs
3. At Northumberland House
4. A Tale Cut Short By A Tail
5. A Different Kind Of Summer Project
6. A Long-Lost Book
7. An Encounter With Tracey Clark
8. Some Truly Curious Clues
9. Another Russian Émigré
10. Per Jorgensen Comes Through
11. Mallory Dials Headquarters
12. A Crucial Revelation
13. In A Jam
14. Pete Mops Up
15. The Indefatigable Ink