What to expect at Bill Cosby sex assault trial
Former University employee Andrea Constand alleges the 79-year-old drugged and molested her in 2004.
Mr Cosby says he is innocent and the encounter was consensual.
It is being seen as the biggest US celebrity trial since former American football player OJ Simpson’s murder trial in 1995.
Several of Mr Cosby’s co-stars from the 1984-1992 sitcom The Cosby Show are expected to attend the trial in Norristown outside Philadelphia, along with more than 100 journalists. Broadcasters and photographers are expected to camp outside.
Recall that Cosby faces three counts of aggravated indecent assault. Each count carries a maximum sentence of 10 years and a fine of up to $25,000 (£19,500).
In 2004 Ms Constand was 31 when she visited Cosby’s home seeking career advice after befriending him through Temple University in Philadelphia, where he served on the board of trustees.
She said Cosby gave her three blue pills which made her legs feel “like jelly” and that he then began to touch her inappropriately.
In 2006, the comedian settled with Ms Constand after providing an undisclosed cash sum to her.