. >> reporter: doug tungate, a temp employee, and joe siegert, a warehouse worker. >> doug tungate and joe siegert were the two that saw michelle when she came in. >> reporter: and dan mockbee. >> of course, dan mockbee because he's the husband. >> reporter: a short list of potential suspects for prosecutor linda tally smith. >> i've referred to this case as almost being like the game of clue because you have a very small group and it's a matter of accounting backwards and excluding people. >> reporter: so that's what faced investigators. in which room? with what weapon? and finally, who? >>> coming up -- the questions begin. where was michelle's husband dan the morning of the murder? >> i was sleeping. what a great alibi, right? >> why did you sleep on the couch and she sleep on the bed? it made us want to take a closer look at dan. not so long ago, on a street just around the corner... i'm home. hi dad the force was strong between father and son. you got it? what are you doing buddy? it's my ewok happy drnce! of course it is. today... hello, hello. hey, daddy. it is passed on to a ne