- Country: UK
- Genres: Comedy, Crime, Drama
- Release: 1961-10-03
- Director: Don Chaffey
- Writers: Patricia Lee , Paul Dickinson , Milton Holmes , Harold Buchman
- Language: English
- Stars: Terry-Thomas , Sonja Ziemann , Alex Nicol , Richard Briers , Honor Blackman , Carol White , Guy Deghy , Clive Morton , Martin Benson , Geoffrey Keen
- Runtime: 90 min
- Awards: N/A
- AKA: A Matter of WHO , Brincando com a Morte (Brazil) , Verpfiffen , Un croque-mort trop curieux (France, French Republic) , A Matter of WHO (United Kingdom) , Un croque-mort trop curieux (Belgium) , Un caso extraño (Mexico) , Il mistero del signor Cooper (Italy) , De nieuwsgierige lijkbidder (Belgium)
- Plot: A man's death of smallpox at London airport sends officials into a panic as they conduct a frantic search for the carrier.
- IMDB:tt0055156
A Matter of WHO Cast · · · ALL
Don Chaffey
Director
Terry-Thomas
Archibald Bannister
Sonja Ziemann
Michele Cooper
Alex Nicol
Edward Kennedy
Richard Briers
Jamieson
Honor Blackman
Sister Sheila Bryan
Guy Deghy
Nick Ivanovitch
Carol White
Beryl
Clive Morton
Hatfield
Geoffrey Keen
Foster
Martin Benson
Rahman
Eduard Linkers
Linkers
Vincent Ball
Dr. Blake
Michael Ripper
Yacht Skipper
Cyril Wheeler
Stephen Cooper
Andrew Faulds
Ralph
George Cormack
Henry
Bruce Beeby
Capt. Brook
Julie Alexander
Stewardess
Barbara Hicks
Margery (uncredited)
Jacqueline Jones
Miss Forsythe (uncredited)
Roland Brand
US Sergeant (uncredited)
Gwenda Ewen
(uncredited)
Pat Roberts
(uncredited)