Surveillance tactics might backfire on the prosecution and hasn't played well with the media.
Still, the connection to the suspected killer powers the latest round in the double murder case.
Check-it . . .
Kylr Yust Trial: Ex-girlfriend plays FBI wiretapped conversation where Yust talks about Kara Kopetsky
HARRISONVILLE, Mo. - During day three of Kylr Yust's double murder trial, the prosecution called Kaitlyn Ferris to the stand. She wore a wire tap for the Federal Bureau of Investigation while spending a day with Yust in 2011, audio from the wire was played in court on Wednesday.