s wife katie spielbauer. coming up. . >> don't be alone with her. she's the kind of crazy that will kill you. >> and why katie may have been so angry with robin. >> is my husband cheating on me with her? >> i don't have proof of that. i will tell you this right now. they were gonna meet last night. you take a minute. like i said, this is something you don't want to hear. >> when dateline continues. continues . ♪birds flyin' high, you know how i feel.♪ ♪breeze driftin' on by...♪ ♪...you know how i feel.♪ you don't have to take... [coughing] ...copd sitting down. ♪it's a new dawn,...♪ ♪...it's a new day,♪ it's time to make a stand. ♪and i'm feelin' good.♪ start a new day with trelegy. no once-daily copd... ...medicine has the power to treat copd... ...in as many ways as trelegy. with three medicines in one inhaler,... ...trelegy makes breathing easier for a full 24 hours, improves lung function, and helps prevent future flare-ups. trelegy won't replace a rescue inhaler... ...for sudden breathing problems. tell your doctor