Trial to Begin for Man Accused of Stabbing Teenager to Death 

Testimony is scheduled to begin Monday in Bangor in the case of a 19-year-old woman living in Old Town who was stabbed to death along the Bangor waterfront. 35-year-old Colin Koehler of Bangor is charged with murdering Holly Boutilier last August.A police affidavit says Boutilier died from multiple stab wounds. She was allegedly killed with a sword.Another man charged in connection with the case, 28-year-old Justin Ptaszynski pleaded guilty to hindering arrest in May.He said he was with Koehler when the crime was committed and is expected to be a key witness in the case.