Circle of Danger (also known as White Heather) is a 1951 British thriller film directed by Jacques Tourneur starring Ray Milland, Patricia Roc, Marius Goring, Hugh Sinclair and Naunton Wayne.

[4] The Monthly Film Bulletin wrote: "The story is on the face of it improbable and is made unnecessarily tedious by the manner in which the hero is shown sampling as many aspects of English life as can be fitted in.

Ray Milland portrays with naive good faith the type of American for whom all English women are supposed to fall; the rest of the cast are adequate to their stock parts, and the backgrounds are, on the whole, authentic.

"[5] Variety wrote: "Despite a novel approach to a melodramatic theme, Circle of Danger is too slowly paced to build much audience excitement or suspense.

Although Milland's acting is praised for its "naturalness, a quality which, it might be added, may be due in part to the unadorned and often expert dialogue turned out by Philip MacDonald", the film despite a decent British supporting cast, "is still an unexciting and largely placid adventure".