From Seven Seas' Mr. Grieves page:

Jhomar Soriano, the artist of Arkham Woods, and writer Cooper Johnson bring you the cleaner from Hell.

He was the best cleaner the mob ever had, covering up crime scenes for his bosses and planting false evidence as if it were an art form. Then he died...and got drafted into an underworld organization far more sinister: Hell.

As Hell's cleaner, Grieves' job is to clean up after unauthorized demon attacks on the mortal plane and to hide all evidence of the supernatural from humankind. Through a combination of clever misdirection and a grisly attention to detail, Grieves faithfully serves his masters in Hell, whether he's concealing a random act of demon rage, or mopping up a bloody vampire attack. The rules are simple: no evidence, no witnesses, and Grieves performs his job like a loyal drone, bereft of emotion.

But when a mortal teen girl named Angela witnesses a murder scene that Grieves must clean, his task is clear. Hide the evidence, kill the girl. Yet Angela awakens something in Grieves he thought lost forever: his soul. Grieves must decide whether to follow orders and whack the girl, or protect her and go on the run, with the legions of Hell at their heels.

Read the free manga preview here.