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Episode cast overview, first billed only: | |||
Derek Waters | ... |
Himself - Host
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Tony Hale | ... |
Edward Cope
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Christopher Meloni | ... |
Othneil Marsh
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Jason Ritter | ... |
Robert Wilson
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Justin Long | ... |
Arno Penzias
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Greg Kinnear | ... |
Thaddeus Lowe
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Stephen Merchant | ... | ||
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Tess Lynch | ... |
Herself - Narrator
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Mark Proksch | ... |
Himself - Narrator
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Jenny Slate | ... |
Herself - Narrator
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Jadon Wells | ... |
Young Thaddeus Lowe
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Bennie Arthur |
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Tim Baltz |
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Maria Blasucci |
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Mort Burke |
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Paleontologists Othniel Marsh and Edward Cope become rivals, and Penzias & Wilson discover the echo of the Big Bang. Featuring Greg Kinnear, Stephen Merchant, Justin Long, Jason Ritter, Tony Hale and Christopher Meloni.