Actress Neve Campbell has backed out of a leading role in new U.S. Tv drama pilot Guilt By Association.

The Scream star was in final negotiations to sign on for the series and had agreed to appear in the pilot, but she has since had a change of heart and exited the project.

Reports suggest Campbell did not want to commit to a Tv show filming schedule.

Guilt by Association, which is based on the book of the same name by former U.S. prosecutor Marcia Clark, centres on a tenacious Los Angeles Deputy District Attorney who works closely with a Los Angeles Police Department detective and a prosecutor.

Elisabeth Rohm and Rose Rollins are slated to star in the series.