Born to a Maltese father and Italian mother in Sousse in Tunisia, in 1963 Fenech's family was repatriated in France, where they settled in Givors. After studying for a law degree, he started a career as a judge. One of his most high profile cases was the investigation on the assassination of the judge François Renaud (nicknamed "le shérif" by Lyon's underworld) in Lyon on July 3, 1975. He was also in charge of the first case involving Scientology in France.
In December 2005, Georges Fenech was a member of the Parliamentary Commission of Enquiry about the Outreau trial (a judicial disaster with innocent men and women being held for years in jail on unfounded suspicions), which had been called by President Jacques Chirac in order to help prevent a recurrence of this situation through alterations in France's legal system.
On 28 June 2006, in response to a unanimous resolution of the Law Commission (commission des lois), the French National Assembly unanimously passed a resolution to set up a Parliamentary Commission on Cults in France, about the influence of cultic movements and the consequences of their practices on the physical and mental health of minors. Georges Fenech was appointed President of this Commission. The Commission presented its report to the Assembly on 19 December 2006. The report contained 50 recommendations which aimed to protect endangered children.
The same year, he was appointed by Prime Minister Jean-Pierre Raffarin a mission to study the ankle monitor to strengthen the fight against criminal recidivism. An ankle monitor is a device that individuals under house arrest or parole are often required to wear.
On his initiative was created in the French National Assembly a Parliamentary study group on the homelessness, of which he became president. He was appointed draftsman of the Act enforceable right to housing.
Georges Fenech was also a member of the Law Commission, judge of the Law court of the Republic (Cour de Justice de la République), Secretary of the Assemblée parlementaire de la francophonie and member of the Parliamentary study group regarding Tibet issues.
Georges Fenech was re-elected in 2007. On 27 March 2008 the Conseil Constitutionnel canceled his re-election on the grounds of violation of campaign finance laws and made him ineligible for one year. However, the Conseil Constitutionnel said that the violation was of a formal nature and that the automatic penalty of cancelation might be not appropriate. Georges Fenech protested the decision. Following such cancelation, the Parliament amended the law so that this type of violation does not imply cancelation of the election.
Georges Fenech has been re-elected from june 2012 as a member of the french Parliament Assemblée Nationale (representing the Rhône as a member of Union for a Popular Movement (UMP). He is a member of the Law Commission, President of the parliamentary study group on Cults, member of the National Observatory of Delinquency (Observatoire national de la délinquance et des réponses pénales), Member of the Parliamentary Commission of Enquiry on the role of intelligence service of the French police in the case of French terrorist Mohammed Merah. He is also Vice-President of parliamentary relations groups, France-Malta and France-Saudi Arabia.
On 9 February 2013, Georges Fenech said he was a candidate for mayor of Lyon for the elections of 2014.
He is the author of books about justice, security, sects and press :
- Main basse sur la justice (1997), Jean-Claude Lattès (8,000 copies)
- La moralisation des Marchés publics (1998)
- Face aux sectes : politiques, justices, État (1999) PUF (2,000 copies)
- Tolérance Zéro. En finir avec la criminalité et les violences urbaines, Grasset(2001) (20,000 copies)
- L'insécurité, Éditions des Syrtes, 2002
- Un juge en colère. En finir avec le juge d'instruction, Éditions du Félin, 2005
- Presse-justice : liaisons dangereuses, L'Archipel, 2007
- La justice face aux dérives sectaires 2008 ;
- Criminels récidivistes : peut-on les laisser sortir ?, Éditions de l'Archipel, 2009
- Apocalypse : menaces imminentes ? Calmann-Lévy, août 2012
- Propagande noire, Editions Kero, janvier 2013, co-écrit avec le romancier Alexandre Malafaye