After her mother is found dead on a quiet road, possibly the victim of a hit-and-run, events and revelations lead Henrietta to wonder if her mother's death was accidental or murder.
Genre:
Mystery 
Hardback Editions
June 2000 : UK Hardback
Title: Henrietta Who?
Author(s): Catherine Aird
ISBN: 0-7540-4123-9 / 978-0-7540-4123-8 (UK edition)
Publisher: Chivers Large print (Chivers, Windsor, Paragon & C
Availability:
Amazon UK Amazon CA October 1979 : UK Hardback
Title: Henrietta Who? (Ulverscroft large print series)
Author(s): Catherine Aird
ISBN: 0-7089-0352-5 / 978-0-7089-0352-0 (UK edition)
Publisher: Ulverscroft
Availability:
Amazon Amazon UK Amazon CA June 1968 : Hardback
Title: Henrietta Who?
Author(s): Catherine Aird
ISBN: 9997502159 / 978-9997502155
Publisher: Doubleday
Availability:
Amazon Amazon UK Amazon CA February 1968 : UK Hardback
Title: Henrietta Who?
Author(s): Catherine Aird
ISBN: 0-356-02305-2 / 978-0-356-02305-2 (UK edition)
Publisher: TBS The Book Service Ltd
Availability:
Amazon Amazon UK Amazon CA Paperback Editions
February 2008 : USA Paperback
Title: Henrietta Who?
Author(s): Catherine Aird Pseud pse
ISBN: 1-60187-018-3 / 978-1-60187-018-6 (USA edition)
Publisher: Rue Morgue Press
Availability:
Amazon Amazon UK Amazon CA June 2000 : UK Paperback
Title: Henrietta Who
Author(s): Catherine Aird
ISBN: 0-7540-4124-7 / 978-0-7540-4124-5 (UK edition)
Publisher: Chivers
Availability:
Amazon UK Amazon CA June 2000 : USA Paperback
Title: Henrietta Who (Thorndike British Favorites)
Author(s): Catherine Aird
ISBN: 0-7838-9003-6 / 978-0-7838-9003-6 (USA edition)
Publisher: Thorndike Press
Availability:
Amazon Amazon UK Amazon CA March 1988 : UK Paperback
Title: Henrietta Who?
Author(s): Catherine Aird
ISBN: 0-552-12793-0 / 978-0-552-12793-6 (UK edition)
Publisher: Corgi
Availability:
Amazon Amazon UK Amazon CA November 1981 : USA Mass Market Paperback
Title: Henrietta Who?
Author(s): Catherine Aird
ISBN: 0-553-25463-4 / 978-0-553-25463-1 (USA edition)
Publisher: Bantam
Availability:
Amazon Amazon UK 1981 : USA Paperback
Title: Henrietta who?
Author(s): Catherine Aird
ISBN: 0-553-20304-5 / 978-0-553-20304-2 (USA edition)
Publisher: Bantam
Availability:
Amazon Amazon UK Amazon CA Audio Editions
January 2017 : MP3 CD
Title: Henrietta Who?
Author(s): Catherine Aird
ISBN: 1-5366-3954-0 / 978-1-5366-3954-4
Publisher: Audible Studios on Brilliance Audio
Availability:
Amazon Amazon CA December 2010 : USA Audio edition
Title: Henrietta Who?
Author(s): Catherine Aird
Publisher: Audible Studios
Availability:
Amazon December 2010 : Canada Audio edition
Title: Henrietta Who?
Author(s): Catherine Aird
Publisher: Audible Studios
Availability:
Amazon CA December 2010 : UK Audio edition
Title: Henrietta Who?
Author(s): Catherine Aird
Publisher: Audible Studios
Availability:
Amazon UK September 1990 : USA Audio Cassette
Title: Henrietta Who?
Author(s): Catherine Aird
ISBN: 0-8161-9519-6 / 978-0-8161-9519-0 (USA edition)
Publisher: Chivers Audio Books
Availability:
Amazon Amazon CA September 1990 : UK Audio Cassette
Title: Henrietta Who?: Complete & Unabridged
Author(s): Catherine Aird
ISBN: 0-7451-5707-6 / 978-0-7451-5707-8 (UK edition)
Publisher: Chivers Audio Books
Availability:
Amazon Amazon UK Amazon CA Kindle Editions
May 2015 : USA, Canada, UK Kindle edition
Title: Henrietta Who? (The C. D. Sloan Mysteries)
Author(s): Catherine Aird
Publisher: Open Road Media Mystery & Thriller
Availability:
Amazon Amazon UK Amazon CA 
