Gillian Anderson and Jason Isaacs were in town last week, filming scenes for an upcoming film based on "The Salt Path".
The book, written as a memoir by Raynor Winn, charts the story of a couple who lose their home.
Days later the husband is diagnosed with a terminal illness and so they decide to embark on a year-long trek of the South West Coast Path.
The pair were spotted shooting scenes on St Mary's Street and in the center of Chepstow, Wales.
Photo source: South Wales Argus