Locke & Key Crown of Shadows ##1

Their father was murdered. Gunned down by a 17-year-old sociopath named Sam Lesser... acting on the psychic commands of his master, Dodge.
Now, Dodge has earned their trust and friendship. They have no ideia that he was the one who turned Sam Lesser against them... no ideia that he'll stop at nothing to claim the key to the Black Door.
Sam is gone, but not forgotten.

HQ, comics, mangá