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Indiana Jones and the Kingdom of the Crystal Skull - timeline

1947

The U.S. Government shanghais Dr. Henry Jones, Jr. and a number of other scientists to examine the the wreckage of an alien spacecraft and the remains of its pilot. (Area 51)

1957

Indiana Jones meets Mutt Williams and Dr. Irina Spalko and is reunited with Marion Ravenwood, all while attemtping to thwart a Soviet plot to uncover and use a mysterious artefact known as the crystal skull.