防詐3要訣：不聽信、不操作、掛斷電話 
The Mystery of the Dramaturgical Dagger
MYST OF THE DRAMATURGICAL DAGG
內容簡介
The world has changed since the first time The Three Investigators went into action, but some things never go out of style. The persistence of truth. The power of perseverance. The importance of questioning everything.
Conceived and co-written by Elizabeth Arthur, the daughter of Robert Arthur, the creator of the Three Investigators universe, this exciting reboot of the classic series takes its iconic characters into a new age. They return reimagined, reinvigorated, and more relevant than ever.
In the fourth book of a 26-book story arc, The Three Investigators find themselves on a high-stakes case at the Rocky Beach Summer Theatre Festival. The young Indian-American film star Daman Duwalia, headlining a production of Romeo and Juliet, contacts the team after receiving a series of menacing letters. Madhuri Singh, the play's director, has also been bullied, and a string of accidents threatens to sabotage the production before it even opens.
Jupiter quickly spots a clue in the letters: they were typed on a machine with a distinctive "signature." The team tracks the machine to the office of Sir Iain Anthony, the famed English actor now overseeing the festival. Could he be the one behind the threats or is there something more sinister at play?
The plot thickens when a fire erupts in Sir Iain's office, Jupiter discovers that Duwalia's dressing room has been bugged, and the team uncovers a troubling detail about Madhuri's supposedly lucky dagger. When the dagger is mysteriously magnetized, it nearly strikes Madhuri during the final tech rehearsal when it falls from the shadows above. As the danger escalates, it seems possible that someone is willing to go to great lengths to stop the play - and may even be prepared to kill to see it canceled.
Who is sabotaging the play - and why? What is the real connection between the dagger and the threats? What other secrets are hidden behind the scenes at the festival? Can their new acquaintance Mallory MacLeod prove her worth to Jupiter and the others on this seemingly baffling case? Will The Three Investigators unmask the villain before opening night, or will the curtain fall on a deadly conspiracy?
Join Jupiter, Pete, Bob, and Mallory as they untangle a twisted plot, chase down a hidden villain, and race against the clock to save the show. With danger lurking backstage and the stakes sky-high, you'll be surprised by the outcome of the thrilling showdown.
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