The former "Dawson's Creek" star is to appear on the episode of "the forgotten" set to air Dec. 1.
"The Forgotten Network investigates the death of a John Doe found murdered and stuffed in the trunk of a car four months ago," ABC said in a news release. "The investigation takes a turn when a DNA test identifies the Doe as an ex-con who died four years ago. How is this possible? Are they the same person? More clues lead the team into the dangerous world of underground gaming. What was John Doe killed for -- Money? Greed? Or something more?"