It will begin performances at London's Royal Court Jerwood Downstairs Theatre Dec. 2, prior to an official opening Dec. 8, for a run through Jan. 14.
Okonedo and Daniels will appear as husband and wife in the play, which will be directed by Jeremy Herrin, currently represented in the West End by his production of Death and the Maiden at the Harold Pinter Theatre.
In the play, a small boy is driving his mother to distraction - waking at night, hearing phantom noises and fixating on his absent father. When he glimpses a figure prowling the house at night, a shadow is cast which gradually strips away his childhood certainties. According to press materials, the play asks demanding questions about the things we believe and their consequences.
Okonedo previously appeared at the Royal Court in Been So Long in 1998. As well as "Hotel Rwanda," other film appearances include "Dirty Pretty Things," "Skin" and "Mrs. Mandela." TV appearances include "The Slap" on BBC4.
Daniels was last seen on the London stage in Luise Miller at the Donmar Warehouse. He has also appeared at the National in Therese Raquin, Three Sisters and All My Sons, winning the Olivier Award for Best Supporting Actor for the latter. He was Tony-nominated for Best Actor in a Play in 2008 for his Broadway run in Les Liaisons Dangereuses at the American Airlines Theatre. Penhall was last represented at the Royal Court by Dumb Show in 2004. His first play Some Voices also premiered at the Royal Court in 1994, and was subsequently adapted for film. Other credits include Blue/Orange and Landscape with Weapons, both seen at the National.
To book tickets, contact the box office on 020 7565 5000, or visit www.royalcourttheatre.com.