Bean (Game of Thrones, Sharpe), Maxwell Martin (South Riding) and Graham (Boardwalk Empire) will star in two episodes of the award-winning BBC One drama, which will be filmed later this year.
"I've wanted to work on a Jimmy McGovern drama for a while and I think this cracking script really delivers a powerful, emotional drama for the audience," said Bean.
Bean will play an English teacher, who has a cross-dressing alter ego Tracie, which leads him into a "terrible crime of passion". Graham is cast as Tony, a satellite and aerial engineer with Rachel Leskovac (Coronation Street) as his beautician wife Karen.
The episode is written by Shaun Duggan (EastEnders) and McGovern, and is helmed by Ashley Pearce (Downton Abbey).
Anna Maxwell Martin's episode will feature her as Tina Dakin, a married mother of three, who is overstretched as a mum and at work as a prison officer. Robert Sheehan and John Bishop also star.
Two episodes of Accused began shooting in 2011 and feature Anne Marie Duff, Olivia Colman and Sheridan Smith.
Accused's first series won two international Emmy Awards for 'Best Series' and 'Best Performance By An Actor' for Christopher Eccleston.
> Robert Sheehan, Olivia Colman join 'Accused' series two
> McGovern's 'Accused' lands second run