Season 31

Jeremiah Kissel

Narrator

4 episodes

Brian Greene

Host

3 episodes

Will Lyman

Narrator

3 episodes

Neil Ross

Narrator

2 episodes

Gene Galusha

Narrator

2 episodes

Oliver Platt

Narrator

2 episodes

Lance Lewman

Narrator (voice)

1 episode

John Lithgow

Narrator

1 episode

Calvin Sims

Reporter

1 episode

C. Scott Willis

Reporter

1 episode

Joseph McMaster

Director

3 episodes

Chris Schmidt

Director

1 episode

Callum Macrae

Director

1 episode

Dimitri Doganis

Director

1 episode

Thomas Lucas

Director

1 episode

Sarah Holt

Director

1 episode

C. Scott Willis

Director

1 episode

Hugh Thomson

Director

1 episode

Liz Tucker

Director

1 episode

Mark Davis

Director

1 episode

Peter Nicholson

Director

1 episode

Julia Cort

Director

1 episode

David Axelrod

Director

1 episode

Duncan Copp

Director

1 episode

Gary Glassman

Director

1 episode

Jacinth O'Donnell

Director

1 episode

Noel Buckner

Director

1 episode

Rob Whittlesey

Director

1 episode

Liesl Clark

Director

1 episode

Julia Cort

Writer

2 episodes

Hugh Thomson

Writer

1 episode

Gary Glassman

Writer

1 episode

Thomas Lucas

Writer

1 episode

Sarah Holt

Writer

1 episode

Chris Schmidt

Writer

1 episode

Joel Olicker

Writer

1 episode

Michael Winship

Writer

1 episode

Michael Barnes

Writer

1 episode

Kate Hudec

Writer

1 episode

David Axelrod

Writer

1 episode

David Sington

Writer

1 episode

Mark Davis

Writer

1 episode

Liesl Clark

Writer

1 episode

Paula S. Apsell

Producer

18 episodes

John Angier

Executive Producer

18 episodes