More like The Veiled Prophet

anchored on:mystery & detectiveour worldearly 20th centurybig city

but

Narrow

The ShadowSeries
series342 books1931
Mystery & detective, set in early 20th century.
Start with The Living Shadow →
Daniel McEvoySeries
series2 books2011
Set in contemporary.
Start with Plugged →
Steve HarrisonSeries
series18 books1934
Mystery & detective, about murder investigation, set in early 20th century.
Start with Fangs of Gold →
SS-GBNovel
Len Deightonstandalone novel1978
Alternate history and spy thriller, about political intrigue, set in british isles.
“Archer's investigation collides with occupation politics, the British resistance, and rival factions of the SS and the German Army, each wanting the case to go a different way.”
from the catalogue
No Good from a CorpseNovel
Leigh Brackettstandalone novel1944
Mystery & detective and noir, set in big city and north america.
Hap Collins and Leonard PineSeries
series46 books1990
About friendship, set in contemporary.
“The long-running series mixes hardboiled crime plotting with the two leads' running banter and loyalty to each other.”
from the catalogue
Start with Savage Season →