A: No. Project Gutenberg only hosts works out of copyright in the US. An Inspector Calls is still protected.
A: Because they are often inaccurate. The Heinemann edition specifically includes "the lighting change" (pink to white) which is vital for understanding the mood. Free versions often delete stage directions to save space. Conclusion: Get the Text, Not Just the PDF Searching for an "An Inspector Calls Heinemann PDF" is a natural reaction to tight deadlines and heavy workloads. However, the Playwright and the publisher invested significant labour into creating the definitive version of this masterpiece.
A: You can, but it is risky. Many free PDFs are missing the final pages (the revelation that "the Inspector isn't real") or contain OCR scanning errors (e.g., "Goole" becomes "Google"). Always compare it to a friend’s physical book.