what on earth had happened to nikki pietz? >> turns out, nikki had a troubled past.roubles finally caught up with her? or was it something else? coming up -- >> did you think something was wrong, something more was wrong from the beginning? >> yes. >> when dateline continues. copd isn't pretty. i'm out of breath, and often out of the picture. but this is my story. ( ♪♪ ) and with once-daily trelegy, it can still be beautiful. because with 3 medicines in 1 inhaler, trelegy keeps my airways open for a full 24 hours and prevents future flare-ups. trelegy also improves lung function, so i can breathe more freely all day and night. trelegy won't replace a rescue inhaler for sudden breathing problems. tell your doctor if you have a heart condition or high blood pressure before taking it. do not take trelegy more than prescribed. trelegy may increase your risk of thrush, pneumonia, and osteoporosis. call your doctor if worsened breathing, chest pain, mouth or tongue swelling, problems urinating, vision changes, or eye pain occur. ♪ what a wonderful world ♪ [laughing] ask yo