A member of the IRA is sent to London to help with a campaign of bombing, but becomes disillusioned with the organisation's violent methods. His desire to further the republican cause through peaceful means fuels tension with his brother and leads to him being branded a traitor. Drama, starring John Mills and Dirk Bogarde.

The relationship between brothers Terry and Matt, both active in the IRA, comes under strain when Terry begins to question the use of violence.