Walter Hill's best known as a filmmaker. He directed The Driver, The Warriors, Southern Comfort, Streets of Fire, Red Heat, 48 Hrs. and its sequel. He also did an uncredited rewrite of Ridley Scott's Alien and has been a producer on every Alien film to date. By the 2010s, though, he was having trouble getting projects financed and was calling himself semi-retired. Thus, during this period, he dabbled in graphic novels. His first was Triggerman (originally published in France as Bailes Perdues) and his second was this comics telling of his movie of the same name, which came out in the same year. (It stars Michelle Rodriguez and Sigourney Weaver and I'm tempted to watch it, even though only got a very limited theatrical release and bombed at the box office.)

Is one an adaptation of the other? I'd guess "neither" and that they were developed together. Anyway, it's interesting. It has much more in common with European comics (c.f. his French co-writer and artist) than it does with American or English ones, because it's so lean and stripped-down. Very small cast. Often no dialogue, although there's first-person narration from our hitman protagonist, Frank Kitchen. No jokes, no banter and nothing wacky. The narrative feels more like hard-boiled 1970s cinema than a comic book. Here's how Hill described the movie, which as far as I can tell is very similar to this graphic novel:

"This movie totally comes out of the same animus as my Tales From the Crypt shows. I mean, these are nasty people, caught in a nasty situation, that out of the experience are somewhat chastened and wiser for it. Assuming they survive. Not all survive! Which was certainly out of the old EC Comics. So it's a very small movie, but it's a king-size Tales from the Crypt."

One day, Frank kills someone with an extremely dangerous sister. Wheels are set in motion. When she's finished with Frank, he's... not himself any more. (This got the movie in trouble with the transgender community, but personally I think the protesters were overreaching. It's trashy, sure, but I don't think it's saying or implying anything about real-world transgender issues.) This messes up Frank pretty badly. Eventually, though, he pulls himself together and goes to ensure that the people responsible are made to regret it.

It's tough, mean and good. I'd guess that its storyline might work better in a graphic novel, because being deadly serious about silly things is that medium's speciality. Seeing this in live-action might trigger "oh, come off it" reactions... although anything is better with Sigourney Weaver. I love how lean and committed this is. I might well go looking for Triggerman.