In the twilight of a long and celebrated career, Bill Cosby was experiencing the kind of comeback few longtime performers enjoy.

A new biography described his life and accomplishments. A stand-up comedy special on Netflix, commemorating his 77th birthday, was set for next week. His collection of African-American art became part of an exhibition at the Smithsonian this month. And NBC was exploring a project that would bring him back to prime time, where in the 1980s he became America’s pre-eminent TV star with “The Cosby Show.

 But in recent weeks, his triumphant return to the national stage has fallen apart in the face of a wave of accusations by women who say..... http://nyti.ms/1tecAGW