A married man and his younger mistress head into the English countryside for an illicit birthday picnic. As the afternoon progresses, events begin to take a disturbing turn.
| Actor | Role |
|---|---|
 Chris LarkinAnthony | Anthony |
 Tuppence MiddletonGrace | Grace |
| MMark DuncanMale Mime | Male Mime |
 Sophie HunterFemale Mime | Female Mime |
| JJessica RadcliffeAnthony's Wife | Anthony's Wife |
| NNadia BouchlaghemAnthony's Daughter | Anthony's Daughter |