Shadow of a Doubt, Young Charlie realizes that Uncle Charlie is a killer from what source?

I'm looking for art in other genres, and I'll begin with one of the most artistically accomplished genre comics of the last ten years, Naoki Urasawa's Pluto (2003-2009). Even though future columns will discuss creators who simultaneously labored in and transcended the superhero genre-we'll trot Kirby out for obligatory analysis, if only to rile Pat Ford-I don't care about superheroes or the superhero-driven business of American mainstream comics.

Let me make clear, though, that I'll be saying little about contemporary superhero comics, because I'm bored by the ones I've read and have nothing to express about them beyond a shrug and an annoyance that hype like 'The New 52' gets so much attention, even negative attention, on comics blogs. I hope that 'Monsters Eat Critics' sounds like the title of a Z-grade science-fiction movie, because I plan to write about genre comics, including science-fiction comics, rather than the alt-, art- and mini-comics so ably covered by other TCJ critics. Welcome to the first installment of 'Monsters Eat Critics,' a monthly column I'll be writing for TCJ.com.

Shadow of a Doubt, Young Charlie realizes that Uncle Charlie is a killer from what source?