Clues to the Odinism killing included sticks placed over Abby and Libby's bodies at the crime scene to form Germanic letters associated with Odinism; a letter painted on a tree with Libby's blood; and faux antlers created with sticks and branches placed above Abby's head, according to the memorandum.

Years after Libby German and Abby Williams went missing, a trial in their deaths has started. What to know about Richard Allen and the Delphi murders.

Evidence will likely include descriptions of the scene, which the defense team linked to a "hijacked" pagan Norse religion called Odinism.