David Jason stars as unconventional policeman Detective Inspector Jack Frost, whose arrogance and indifference to orthodox police procedures masks a keen sense of observation and a dedication to solving crime. Based on the books by R.D. Wingfield, each feature length episode shows Frost unravelling complex cases with his special touch of sharp instinct, dogged determination and compassion.

Appendix Man
An emotionally charged Frost resigns after the violent death of his prot g , but is soon back. His return coincides with that of a new Detective Sergeant who is investigating the suspicious death of a reclusive art collector. Frost is involved when fingerprints are identified as belonging to a man pulled out of the Denton river a year ago.

One Man's Meat
Frost is experiencing cash-flow problems in his newly refurbished house so takes in a lodger, not realising he is also taking in a dog. Frost investigates the death of a homeless teenager found drowned, and an environmental health officer who suspected illegal practices at a Meat Processing Plant.

Private Lives
Detective Frost is paired with DS' Razor' Sharpe, a replacement for a sick colleague. The duo investigates a hit and run accident in a seemingly peaceful village. Frost also looks into an attempted armed robbery at a local brewery.

Keys to the Car
Frost is questioned for using unorthodox interrogating techniques on a suspected drug dealer. Frost is called on when a Mercedes is stolen at a local golf club and uncovers a scam where the thief travels from club to club, stealing cars. Things take an interesting twist when the Mercedes is recovered the next day, with the dealers body in the trunk.