On screen
Cast
7 credited performers
Artwork unavailable
Mary Barclay
Female Scientist
Artwork unavailable
Anthony Call
Narrator
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Michael Larson
Reporter
Kelsey Lowenthal
Young Heidi
Artwork unavailable
Scotty Parker
Concerned Neighbor
Artwork unavailable
Robert Suhr
Mr. Gordy
Artwork unavailable
Will Winchester
Male Scientist in Green Shirt