By Gul Y Davis, adapted for radio by David Calcutt.
Peter is a writer with obsessive compulsive disorder - if he travels in a car, he is terrified that he will run over a child; and has to keep stopping constantly to check that there is nothing caught under the wheels.
It is the day of his last meeting with his Spanish psychiatrist Llaya.
He is determined to drive to the meeting but gives in to his fear and arrives for his appointment soaking wet from walking through the rain.
At the end of the session, Llaya offers to drive him home - can Peter confront his worst nightmare and accept her proposition?
Director Kate Chapman.