""Mr. Lucky"" is Enzo Fiorelli, a charming, charismatic and successful con man. Several years ago he defrauded most of Mt. Thomas' Italian community for everything they had, destroying their lives, ruining businesses and leaving a trail of grief and outrage. Enzo Fiorelli paid for his exploits with a long stretch in jail. Released, he inexplicably walked out of his witness protection program, blowing his cover forever, and returned to Mt. Thomas. The Heelers struggle to keep a lid on the community's righteous resentment for the man who caused so many of them so much pain. At first it's only hate mail, and then it's a brick through the windscreen of Enzo's expensive car… but then it's a bullet through one of his tyres. Is it the community? Is it Enzo himself, trying to get the Heelers to give him full-time protection? And why has he returned to Mt. Thomas, where there is so much hatred directed towards him.

Sally Downie, the woman in Tom's life, has been abducted and the Heelers suspect the same two violent criminals who are holding hostage the daughter of a local con man. But when the girl escapes, the Heelers realise they may have misread the situation. Sally is still in danger and Tom must lead a desperate search to save her life.