As Frost has mixed emotions about promotion, a young boy is reported missing and the malnourished corpse of a youngster is presumed to be his.

Frost investigates the murder of a security guard at a quarry with an autistic teenager the only witness while DS Wallace helps Frost with an unusual series of burglaries.

Frost misplaces a winning lottery ticket while trying to find a security leak that lead to the murder of two key witness in a supposed safe house.