In the run-up to th Niku IV expedition, unconventional funding and an amazing new witness.
Evaluating a new witness, planning the work for the second expedition, and dealing with a last-minure crisis.
An unexpected helicopter visit, new discoveries, and the mystery of Gallagher's grave.
The second TIGHAR expedition to Nikumaroro re-enacts the 1937 U.S. Navy search and finds surprises, frustrations. and new clues.