daron wyatt was confident he had enough evidence to prove xavier lopez had killed cathy torrez. orange county district attorney did not agree. the d.a. decided not to charge? >> correct. >> reporter: and so xavier's set free? >> xavier walks. >> coming up -- a detective who refuses to wit has another good reason not to. >> when dateline continues. containing two long-acting bronchodilators in one inhaler. anoro is not for asthma. anoro contains a type of medicine that increases risk of death in people with asthma. it is not known if this risk is increased in copd. anoro won't replace rescue inhalers for sudden copd symptoms and should not be used more than once a day. tell your doctor if you have a heart condition, or high blood pressure. tell your doctor if you have glaucoma, prostate or bladder problems, or problems passing urine as anoro may make these problems worse. call your doctor right away if you have worsened breathing chest pain, swelling of your mouth or tongue, problems urinating or eye problems including vision changes or eye pain while taking anoro. nothing can rev