Tim is in a custody battle with his ex-wife, when he quits his job. He applies for a job as a civil servant doing data entry, but discovers during the job interview that he has been offered a job as a trainee spy for MI5.
During Tim's first day at MI5 he appears to rescue a homeless man. A social worker assesses Tim's parenting skills, but she becomes a little too friendly.
The new drugs policy leads the Examiner to substitute Tim's blood for his own, which leads to unexpected trouble. Meanwhile, Marcus finds a new vocation.
