Sydney Horler was born in Leytonstone (then still within Kent) and was educated at Redcliffe School and Colston School in Bristol. His first job was with Western Daily Press and Allied Newspapers in Bristol started in 1905. This lasted until 1911 when he left to become a special writer on the staff of Edward Hulton and Co. in Manchester. He moved to London to work on the Daily Mail and Daily Citizen, although he also worked in the propaganda Section of Air Intelligence toward the end of the World War I. After the war he became a sub-editor at the John O'London Weekly. In 1919 he had an argument with the editor and was fired, so he decided to become a full-time writer. His first novel, The Mystery of No.1, was published in 1925.

Fighters of Fear: Occult Detective Stories
2020
ISBN 9781945863523
The Midnight People
1968
ISBN 9780903925860
Lord of Terror
1935
ISBN 9781434418173
Ring up Nighthawk
1947
ISBN 9780850460049
Tiger Standish comes back
1970
ISBN 9780091043902
The man from Scotland Yard
1970
ISBN 9780091043803
Nighthawk Strikes to Kill
1971
ISBN 9780850464078
False Face
2004
ISBN 9781417942213
The Traitor
2015
ISBN 9781464204982