"The House Without a Key" was the first case solved by this Chinese detective
[DOC] [TLE] The House Without a Key (1926) - IMDb [PAR] Action  A Pathe serial in ten chapters of two-reels each: Dan Winterslip, a 
wealthy man in ... Charlie Chan's Greatest Case .... Charlie Chan, a Chinese 
detective, offers to help solve the killing and the mysteries ... Add the first question
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