It is directed by Diarmuid Lawrence and written by Andrew Davies.
It stars Anna Maxwell Martin, David Morrissey, Peter Firth, Douglas Henshall, Penelope Wilton and John Henshaw.
The first episode aired on BBC One 20 February 2011, the two remaining on the following Sundays.
In the United States, it aired on the PBS anthology series Masterpiece in May 2011.
This article related to a BBC television programme is a stub.