The publisher will collect the first stories in Alex De Campi and Christine Larsen's acclaimed digital comic.
"The year is 1812, and Valentine is one of the few soldiers left of Napoleon's once-mighty army felled by the Russian winter," said Image.
"Given a mysterious package by a dying general with orders to see it safely back to France, Valentine finds himself pursued through the snow by blood-eyed monsters who intent on stopping him.
"It's been an unbelievable amount of fun to write a cliffhangerrific supernatural thriller, with twist upon twist to keep readers on the edge of their seat," said de Campi. "I grew up reading fantasy and sci-fi novels, and suddenly finding myself elbow-deep in the fantasy toybox has been a delight.
"I've really enjoyed grabbing the beloved tropes and expectations of the genre and both respecting them and twisting/subverting them at the same time. If you think this is a historical thriller, for example, you are so, so wrong. The book is a wild ride."
Valentine was originally distributed comiXology, RobotComics, and Amazon's Kindle, achieving over 350,000 downloads.