The Hardy brothers travel to an Arizona ranch and eventually, Thailand in pursuit of jewel thieves who have stolen a priceless ruby.

Crimson Flame 1993, Aladdin Paperbacks

ISBN-13: 9780671642860

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The Crimson Flame 1984, Armada, London

ISBN-13: 9780006918363

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The Crimson Flame 1983, Minstrel, New York, NY

ISBN-13: 9780671423674

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The Crimson Flame 1983, Wanderer Books, New York, NY

ISBN-13: 9780671423667

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