Matt Allwright looks into the work of fraud investigators determined to catch those who steal from the public purse. And he meets the genuine claimants who deserve government help. Matt meets the fraud investigators who are on the trail of one woman who they believe is using various identities to work illegally in the UK as a nurse and claim benefits to the tune of £180,000.

After 30 years living abroad, Sandra Forshaw returns to the UK and claims benefits, but suspicions are soon raised. And when Oxford City Council launch an investigation, they uncover the real identity of the woman, amid decades of lies. And Matt meets the people who stepped in to help 84-year-old Dorothy during her hospital stay.

An investigation into a council department head unearths a number of ghost employees.

Ealing Council discover a cache of false identities, forged documents and benefit claims.

A five-year investigation by West Midlands Police reveals a sophisticated fraud.

Matt meets the Croydon fraud investigators hot on the trail of a £47,000 benefit cheat.

Investigators discover the truth behind a jet-setting couple's lavish lifestyle.

Havering Council discover a £168,000 fraud behind a seemingly single mum.

Croydon Council learn they have been paying out claims for empty or derelict homes.

Fraud investigators at Brent uncovering a carousel of benefit fraud amounting to £190,000.

The story of a finance manager who used taxpayer money to fund her lifestyle.

Croydon Council follows up on a tip-off about a benefit claimant using a stolen identity.

Investigators for the NHS discover a financial analyst siphoning off taxpayers' money.

Fraud investigators catch a tax dodger who avoided paying hundreds of thousands of pounds.

Matt meets fraud investigators who were on the trail of a Jaguar-driving benefit cheat.

A benefit cheat tries to avoid paying back what he owes a council.

Officers at Southwark Council unwittingly uncover evidence of benefit fraud.

The fraud team at Ealing call on a handwriting expert to help convict two benefit cheats.

Investigators reveal how a family who seemed to have hit hard times were hiding fraud.