The story of a double-glazing showroom in Essex in the 80s, led by charismatic Vincent Swan, and his unscrupulous sales team, Brian Fitzpatrick and Martin Lavender.

A game warden moves his family to Lake Placid, once the site of deadly crocodile attacks. Locals assure him the crocs are gone, but his mischievous young son finds a few baby crocs and begins feeding them. They quickly grow into very big adults and start attacking the game warden's family and nearby town.

A detective team apply new techniques to old crimes as they solve cold cases.