From the minds of Adult Swim veterans Tim Heidecker and Eric Wareheim, this anthology’s tales might best be described as horrifying, insane or — at least — dark. The 15-minute episodes feature various guest stars. While its gallows humor is distinctly Tim and Eric, the presentation quality probably won’t jibe with what their fans are used to; the guys’ longest-running show, “Tim and Eric’s Awesome Show, Great Job,” had a low-quality, public-access feel to it, whereas “Bedtime Stories” has high production values.