A sherlock 4. évad 1. részében a mérnök hüvelykujja? Mivan?

"It’s not the only reference to Conan Doyle stories, of course; while multitasking, Sherlock mentions ‘the wrong thumb’, which could be assumed to refer to The Engineer’s Thumb, while ‘the Merchant of Sumatra’ is a reference to Conan Doyle’s The Giant Rat of Sumatra."

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Mond egy olyat, hogy a rossz hüvelykujj, ami utalhat a novellára.