Pike makes reference to the Charlie Chan series of films starring Warner Oland, in particular Charlie Chan in London which was released in 1934, when Mainwaring calls a meeting to reveal the identity of the villain.
It once had a glass enclosed dance floor over the water, eventually lost to the winter surf and attracted such Hollywood celebrities as Marie Dressler, Warner Oland and opera singer Lotte Lehmann.
Sidney Toler, who took over the Charlie Chan role from Warner Oland, bought the screen rights to the Chan character and brought the series to Monogram Pictures.
This was the second of a series of sixteen Chan films to feature Warner Oland as the sleuth.
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Daughter of the Dragon (1931) is a movie directed by Lloyd Corrigan, released by Paramount Pictures, and starring Anna May Wong as Princess Ling Moy, Sessue Hayakawa as Ah Kee, and Warner Oland as Dr. Fu Manchu (for his third and final feature appearance in the role, excluding a gag cameo in Paramount on Parade).
The Mysterious Dr. Fu Manchu is a 1929 film starring Warner Oland as Dr. Fu Manchu.