today, samantha heath is expected to take the stand. new this noon, lawyers for boston marathon bomber dzhokhar tsarnaev have just filed a notice of appeal. the notice filed with the first u.s. circuit court of appeals does not give any grounds for appeal. those will be spelled out later on. tsarnaev was convicted last year and sentenced to death in the three people and injured more than 260. accused of aiding in the escape. coming up, officials in california arrest a teacher on suspicion of helping three inmates escape from a maximum-security jail. plus, china is now joining the search for the malayasian airliner that disappeared two years ago. why they have decided to join that search. scattered snow showers a possibility that afternoon, and the next one approaching over the weekend. the temperature change that s corner, wine week continues . we are going to show you some that pairs well with it beet risotto. erin: new details from the inmate escape in california. authorities now say that a teacher has been arrested on suspicion of he

but samantha heath says the planning began with buffum. >> did it come your halvorson? >> yes. >> did he tell you why that was your responsibility? >> because i hadn't done anything to fix our relationship. reporter: heath testified that buffum had blamed halvorson for problems in the couple's relationship. heath says she didn't want to kill her but felt pressured by buffum. the state pointed to a text message leading up to the crime. >> i would appreciate if you take care of andrea so i can -- what did you interpret that to mean? >> that if i killed andrea, i got rid of her, that it would make him feel better about me. reporter: but the defense calls heath out on pes ages she herself sent buffum. >> just nonchalantly do it with a gun. reporter: the defense is trying to prove that buffum was suffering from a mental illness. that her face not be shown. >> he's a fully functional normal person from what i can tell. reporter: but the defense pointed out that at the time of her assault she hadn't seen buffum in several months. however, heath testified that buffum had let hi

his former girlfriend, samantha heath, pleaded guilty to committing attempted murder. she admitted to stabbing andrea halverson 16 times and leaving her for dead. kyle buffum is accused of planning that attack. it marks 30 years today since the challenger disaster. seven people were killed in the disaster, including concord teacher christa mcauliffe. join us tonight for "touching the future: the challenger legacy." see how challenger centers are inspiring students around the world. the sun is shining. i don' t see a cloud in the sky. kevin: temperatures are starting some single digits to down to near zero degrees up in pittsburgh and colebrook. there are quite a few clouds back to our west. those will drift in for western and northern areas through the day. they will provide the chance of a couple of snow showers tomorrow. temperatures right now making their way back to near 10 degrees up north. high temperatures getting up anywhere near the freezing mark in the north country. we will be either side of 40 with enough sunshine through of the state. light winds. there co

but samantha heath says the planning began with buffum. >> did it come your halvorson? >> yes. >> did he tell you why that was your responsibility?

his former girlfriend, samantha heath, pleaded guilty to committing attempted murder. she admitted to stabbing andrea halverson 16 times and leaving her for dead. kyle buffum is accused of planning that attack. it marks 30 years today since the challenger disaster. seven people were killed in the disaster, including concord teacher christa mcauliffe. join us tonight for "touching