But the answering machine tape, purported to involve the murder victim and her pimp, is not allowed into evidence because a retired Portland police detective was unable to authenticate it.

Amy Fairfield suggests they didn’t follow up on alternate suspects or fully check out the alibis of some people connected with a teenage girl brutally murdered on the Portland waterfront.

Attorneys for Sanborn, who spent 27 years in prison, are questioning the way prosecutors won his conviction in the killing of Jessica L. Briggs, 16.