Guillermo del Toro has closed a deal to adapt the Manga series titled “Monster” for HBO.

Written and illustrated by Naoki Urasawa for Shogakukan Inc., the award-winning “Monster” series begins with a brilliant young doctor whose choice to save a dying 12-year-old boy unwittingly unleashes a pandora’s box that leaves him battling to stop a plot of mass genocide.

The young adult series first began in 1995 in Japan but it took another decade or so before it was translated for distribution in the U.S.

Del Toro will serve as an executive producer and director and will co-write the story with Steven Thompson. Don Murphy, Susan Montford and Gary Ungar will serve as non-writing executive producers.

Deadline first reported the deal.