The classic graphic novel. Tintin and Captain Haddock peek in Professor Calculus’ laboratory to find a sonic device and a very mysterious-and violent!-stranger. Realizing that Calculus’ life is in danger, Tintin and the Captain rush to warn him before it’s too late.
Nothing yet! Let Hergé know that you want to hear from them about their book.
More than halfway there—keep going!
Just the barebones.
Are you the author or illustrator? Claim your book.