City officials in Concord are searching for answers in wake of last week's double homicide of Stephen and Wende Reid, described by family as recently retired humanitarians who enjoyed the outdoors and being active. Subscribe to WCVB on YouTube now for more: http://bit.ly/1e8lAMZ Get more Boston news: http://www.wcvb.com Like us: https://www.facebook.com/wcvb5 Follow us: https://twitter.com/WCVB Instagram: https://www.instagram.com/wcvb5/