Tarzan's Desert Mystery (1943) runs 1 h 10 min, is rated NR in the US and averages 6.1 from 52 TMDB members. A letter from Jane, who is nursing British troops, asks Tarzan's help in obtaining a malaria serum extractable from jungle plants. Tarzan and Boy set out across the desert looking for the plants. Along the way they befriend a stranded American lady magician.
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Streaming availability by JustWatch. In the US, as of 2026-11-05: FlixFling (subscription).
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