Early on the morning of 11 February 1987 a cyclist on their way to work in Fort Collins, Colorado, discovered the mutilated body of an auburn-haired woman lying in a field. 37 year old Peggy Hettrick had last been seen leaving a local pub, six hours previously, to make the short walk home to her apartment. Several clues were left at the crime scene including finger prints, shoe markings, and two human hairs. Detectives quickly pinpointed a suspect but the investigation was dogged by tunnel vision and confirmation bias. Twenty years later DNA evidence would blow the case wide open.

Sources: For a full list of sources please see the Facebook page 

https://www.google.co.uk/amp/s/www.denverpost.com/2011/12/17/key-questions-linger-in-prominent-cold-case-the-killing-of-peggy-hettrick/amp/

https://www.westword.com/news/peggy-hettrick-new-dna-evidence-in-murder-that-led-to-improper-tim-masters-conviction-5850454

law.umich.eduhttps://www.law.umich.edu › PagesTimothy Masters - National Registry of Exonerations

TheCinemaholicthecinemaholic.comPeggy Hettrick Murder: How Did She Die? Who Killed Her?

apps.colorado.govhttps://apps.colorado.gov › apps › c...Peggy Hettrick - Colorado Cold Case Files - Case Detail

https://eu.coloradoan.com/story/news/2017/02/08/peggy-hettrick-murder-cold-case-fort-collins/97378070/

https://innocenceproject.org/special-prosecutors-in-colorado-case-point-to-missing-evidence/

https://caselaw.findlaw.com/co-supreme-court/1377853.html

https://enacademic.com/dic.nsf/enwiki/8616997

http://freetimmastersbecause.blogspot.com/2007/12/peggy-hettrick-murder-victim.html?m=1

TheDurangoHeraldwww.durangoherald.comDetective, suspect in murder case form unlikely friendship

https://eu.coloradoan.com/story/news/2016/02/17/29-years-later-cold-case-haunts-

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