Petaluma actor Gabriel Sunday guest stars this Wednesday, Nov. 13, on “CSI.”

The episode, titled “Helpless,” airs at 10 p.m. on CBS.

“From what I know,” reported his mother, Laura Sunday, “he plays a rather despicable character and lots of fake blood and gore ensue.”

The day before his “CSI” performance, Sunday gets a Kickstarter campaign underway to create “Hi, How Are You?” a short film about musician Daniel Johnston. Johnston will star in the psychedelic film about an aging musician coming to terms with the dreams of yesteryear. Visit gabrielsunday.com for details.