By Chloe Moss. A young man with Down's syndrome admits to killing his mother. Then a woman turns up claiming that he was with her on the day that his mother was killed. Stone must discover who is lying and why. Stone ...... Hugo Speer Eammon ...... Tommy Jessop Jacqueline ...... Christine Brennan Tanner ...... Craig Cheetham Catriona ...... Zoe Henry David ...... Andrew Grose Jay ...... Andrew Whitehead Weeks ...... Luke Broughton Directed by Stefan Escreet.