Frost investigates the disappearance of 8 year-old Tricia Martin. The last person to see her alive was 19 year-old Billy Conrad who has Downs Syndrome and has the mental capacity of a child. He regularly played with children of that age and seems to be keeping a secret. Supt. Mullett is concerned about the number of car being taken by joy riders and expects Frost to do something about it. Frost has to deal with a new DCI who's idea of teamwork comes up against his own more individualistic style. Written by
Did You Know?
This was the first episode to feature the opening titles that would be used until the end of the series in 2010. See more
Billy likes playin' with children then, does he?
The children take him at face value. A lot of people can't do that.