charges. and sure enough. >> reporter: 11 da-- 11 days afe shot debbie he was charged with manslaughter. prosecutors carl alexander and leo gonzales caught the case. >> why did manslaughter fit? >> manslaughter is defined in the texas penal code as causing the death recklessly of an individual. essentially that's what it boils down to. it was somehow, somewhat of an accident. >> lars was released on bail. debbie's parents continued to support him. >> manslaughter still in our understanding would be an accident. okay? and so we go forward from there. >> but as the days without debbie stretched into weeks, something cooled in their relationship. >> he starts changing in my conversations with him and connections with him. and not so forthcoming. if i ask him something he kind of holds back. >> lars' scissioner said his behavior could be explained. he had sunk into a deep