Graphic novel, that is. We don’t usually cover Castle on SciFi Mafia but its star, Nathan Fillion, forever in our hearts as Captain Malcolm Reynolds of the Serenity on Firefly, will always make an appearance here if he’s gonna go and do something like this.

Here’s the description of tonight’s Castle episode “Heroes and Villains” on IMDb:

When an ex-con is mysteriously slain in an alley, Castle and Beckett believe a vigilante is behind the murder. But efforts to identify their suspect are thwarted when they discover that he roams the city in a Superhero costume — and may indeed be a Superhero. Can they capture and unmask the killer before he strikes again?

But here’s the best part: the TV spot.
[youtube]http://www.youtube.com/watch?v=kHorTPeTIBA&hd=1[/youtube]

Ka-Pow!

Castle airs Monday nights at 10/9c on ABC.