A decade ago, Duffy was on top of the charts with her retro jazz-club-style hit song, Mercy. At the time, she was almost as big as Adele, and everyone assumed she’d go on to accomplish incredible ...

Duffy, the singer best known for the 2008 hit “Mercy,” made her first public-facing appearance this week since she claimed more than five years ago that she’d been kidnapped, raped and “held captive” ...