Hard-Boiled in what sense exactly? Because there are a lot of superhero comics like that, even though I'm sure your referring to old style crime dramas

Off the top of my head...

If you are looking for cops in a super-hero setting, Gotham Central by Brubaker and Rucka is very, very good.

If you are looking for crime comics (with the) criminal element as the protagonist) check out Darwyn Cooke's Parker adaptations GNs or Brubaker's stuff like Criminal or Scene of the Crime.

Sleeper by Brubaker offers an undercover infiltration crime type story in the Wildstorm universe and it too is very good.

Detectives Inc. by Don McGregor is worth a look in PI genre as well.

-M

Ed Brubaker and the various series he's written for Marvel's Icon imprint and Image, all collected in fine tradebooks. Fatale, Velvet, The Fade Out, Criminal


Brubaker paired with Sean Philips- it really does not get better then that

I'd forgotten about that, but I liked it very much. Also by BEndis, Powers (at least the first few trades of the Image stuff) is a very good super-powered police book.

And that reminds me of Alan Moore's Top 10, which some have described as Hill Street Blues meets super-heroes. Also a very good read.

-M

Jon Sable tread in both the spy and PI worlds, depending on the story. It even did a tribute to the Maltese Falcon. Grimjack is essentially a hardboiled PI in a future world (dimension). Black Terror, from Chuck Dixon, beau Smith and Dan Brereton was more of a crime story than a superhero tale. Maze Agency was a great fair-play detective series, in the mold of Ellery Queen. American Flagg is essentially crime fiction, in the future and Time2 is the same, in a kind of timeless world. Blacksad covers the hardboiled PI genre well, with animal characters. Blake and Mortimer kind of mixes mystery, espionage, and sci-fi into a world of adventure. Jean Van Hamme's Wayne Shelton is a tough guy espionage series, available from Cinebook, as is Lady S, which is a tough gal espionage.

Also on the European front, there is Vittorio Giardino's Sam Pezzo stories, which are PI adventure, and Max Friedman, which is international espionage intrigue.  Jordi Bernet and Sanchez Abuli's Torpedo is crime fiction, set during Prohibition, featuring a mafia hitman.  It gets pretty violent; but, there is also a ton of dark humor.  Jose Munoz Alack Sinner is a hard boiled a crime fiction work as you will find, as Frank Miller well knows.


iBooks printed Bloody Streets of Paris, in English.  It is an adaptation of Leo Malet's crime novel 120 Rue de la Gare, adapted by Jacques Tardi (It Was War in the Trenches).  Tardi adapted several more of Malet's Nestor Burma novels,though they are not available in English, at this time. 

Cinder and Ashe was a 4 issue mini-series brought out by DC in 1988. Finally collected in 2014. A very taut PI drama with political overtones.

Cullen Bunn and Brian Hurtt who did the great Fantasy/Western 'The Sixth Gun' have returned to their earlier creation, 'The Damned', which combines hard-boiled noir with fantasy elements.
Initially, they're reprinting the original story 'The Damned Vol.1: Three Days Dead', this time... in colour!
In this story, joining Italian, Irish, Jewish and other immigrants in settling in American during the Prohibition era are additional newcomers from Hell.
Firstly, the world-building in this one is top-notch, and the demonic characters are beautifully integrated into the setting without overwhelming the overall tone, and Secondly, this is a damned fine Dashiell Hammett pastiche. The main character, Eddie, is a crackerjack Hammett-style character, blunt, taciturn and close-mouthed, surrounded by treachery and danger on all sides.The mystery is solid as a rock, with a great array of detailed and memorable characters and a bunch of sweet twists, deceits, motivations and revelations.

I've been waiting for over a decade for these guys to get back to 'The Damned' and I could not be happier.