I don’t know how long it existed in this format, but the price in the early 50’s rising from 1/6 to 2/- must have put the series in competition with paperbacks.
Berkely Gray – Blonde Danger
Peter Cheyney – Never a Dull Moment – Your Deal My Lovely –
Anthony Gilbert – The Spinsters Secret
Stephen Maddock – Drums Beat at Dusk
M G Eberheart – The Man Next Door
David Hume – Requiem for Rogues

Collins Crime Club Book
Including P&P in UK
£5.00