Betty Mabel Lilian Uelmen (née Williams; 11 January 1919 – 6 September 1974) was a British journalist, screenwriter, and pulp fiction writer who used the pen names Dail Ambler and Danny Spade.
[1] She was born in Aldershot in Hampshire and worked as a Fleet Street journalist and correspondent before settling on a career in fiction writing.
Her writing style and content were somewhat influenced by Mickey Spillane.
After the boom in pulp fiction in the United Kingdom ended in the mid-1950s, she turned to screenwriting under the Dail Ambler name.
She later lapsed into semi-retirement in Surrey, where she died at the age of 55.