- Acorn, RLJ Entertainment, Silver Spring, MD, ©2016
- distributed by Discovery Channel, Silver Spring, MD
- ITV Studios Limited, Licensed by ITV Global Entertainment Limited, Distributed by Acorn Media U.S., England, Silver Spring, MD, ©1992-1993
- Distributed by Acorn Media U.S., ITV Studios Limited, Silver Spring, MD, ©2011, ©2010
- Acorn Media, Silver Spring, MD, 2010, 2008
- Acorn, RLJ Entertainment, Silver Spring, MD, 2018
- ITV Studios Limited, ITV Global Entertainment Limited, Distributed exclusively by Acorn Media U.S., England, Silver Spring, MD, ©1972
- Agatha Christie Ltd. a Chorion company licensed by ITV Global Entertainment Ltd., Distributed exclusively by Acorn Media U.S., Silver Spring, MD, ©2010, ©2004
- Acorn, Silver Spring, MD, 2016
- Agatha Christie Limited, ITV Studios Home Entertainment, licensed by ITV Global Entertainment Limited, Distributed exclusively by Acorn Media, Silver Spring, MD, ©2012, ©2010
- Discovery Education, Silver Spring, MD
- RLJ Entertainment, Acorn, Silver Spring, MD
- Discovery Communications, LLC, Silver Spring, MD, 2015
- London Weekend Television Ltd., Distributed exclusively by Acorn Media, England, Silver Spring, MD, ©2004, ©1986
- Shaftesbury Murdoch I Inc. licensed by ITV Global Entertainment Limited, distributed exclusively by Acorn Media U.S., Canada, Silver Spring, MD, ©2009
- Acorn, Silver Spring, MD, 2017
- ITV Studios Limited, ITV Global Entertainment Limited, Distributed exclusively by Acorn Media U.S., England, Silver Spring, MD, ©1974
- BBC, distributed exclusively by Acorn Media U.S., England, Silver Spring, MD, ©2011, ©1976
- ITV Studios, ITV Global Entertainment Limited, Agatha Christie Limited a Chorion company, distributed exclusively by Acorn Media U.S., England, Silver Spring, MD, ©2011, ©1990
- Acorn Media, Silver Spring, MD, 2020
- RLJE Films, Silver Spring, MD, 2020
- Acorn Media, Silver Spring, MD, c2011
- Acorn Media, Silver Spring, MD, 2011
- Acorn, Silver Spring, MD, 2013
- Acorn Media, Silver Spring, MD, 2019