Lars Sister News Today

Weeks, something cooled in their relationship. >> he starts changing in term of my conversation, connections with him. and hes -- not so forthcoming. if i asked him something, hed kinda holds back. >> reporter: lars sister said his behavior could be explained. he had sunk into a deep depression. >> he just kept sayin he wanted debbie back, if he could get her back. it was an accident. he was sorry. >> reporter: investigators, as they worked through the case, looked into the couples finances. deb...