Andrea Canning talks with Josh Mankiewicz about her episode “The Butterfly.” When 21-year-old art student Katelyn Markham suddenly vanished from her Ohio home in the summer of 2011, her friends and family knew something was terribly wrong. It would take more than a decade for her killer to be...

A young Ohio woman vanishes one summer night, prompting her community to conduct a massive search. When she’s found dead, investigators work to uncover her killer. Andrea Canning reports. Listen to Andrea Canning and Josh Mankiewicz as they go behind the scenes of the making of this episode in...