>> the hartleys did not receive a ticket. that stop lasted seven minutes or so. according to investigators in the state of texas, that traffic stop occurred an hour half before tiffany says her husband was murdered, shep. >> shepard: new tonight we have information on a lab test from blood from the wife's life jacket. when do we expect results on that. >> we hope to get information soon, shepard. the sheriff down here in texas says it could help corroborative any's story or maybe not. listen here. >> there was blood on her life vest to indicate something happened. >> yes, sir. it's being analyzed to see if it was her blood or his blood. she was not bleeding. maybe that's his blood she shot him and blood spattered on her vest. everything is possible but not very probable. not the way the story fits. >> authorities down here in texas are still investigating