Peter Baron - 'Who?' (1927)

Peter Baron was the pseudonym of thriller writer Leonard Worswick Clyde (1906 Nov 21 - 1987 Nov 16). He wrote 4 now scarce crime / detective novels. The dust jacket pictured is from his 1927 novel 'Who?' The artist of this striking jacket is unknown and very little is known about Worswick Clyde. Hubin's Bibliography of Crime Fiction, 1749-1975 lists the following:

Who? [1927]
Jerry The Lag (US: Murder In Wax) [f|1928]
The Poacher [1929]
The Opium Murders [f|1930]