John F. Showalter
監督, プロデューサー, 編集者
次として知られている:
作品リスト
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| 2016 | Timeless (2016) · as Executive Producer |
| 2002 | |
| 2000 | Gideon's Crossing · as Consulting Producer |
| 2022 | The Winchesters · as Co-Executive Producer |
| 2005 | Supernatural · as Co-Executive Producer |
| 1991 | Candid Camera · as Coordinating Producer |