The Jade Mask (1945)
Plot
Respected detective Charlie Chan receives a critical government assignment to investigate the mysterious disappearance of scientist Harper, who was developing a vital serum. The situation escalates when Harper is found murdered, prompting Chan to unravel a web of intrigue. Among the prime suspects are the scientist's sister and his loyal butler. As Chan delves deeper into the case, he must navigate a maze of motives and secrets to uncover the truth behind the murder and the serum that could alter everything.
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