https://www.legacy.com/obituaries/thest ... =195921999
She played Miranda in Tara King episode They Keep Killing Steed (1968).
IMDb page:
https://www.imdb.com/name/nm1478099/
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P.S./ Not so long ago, I worked for a biography of Rosemary for a section on the Alan Hayes website Randall and Hopkirk (Declassified) and just interested in her disappearance. http://www.randallandhopkirk.org.uk/who_actors_d.htm
She had Facebook page https://www.facebook.com/rosemary.donnelly.775