Born in Syria, Katcha spent his childhood in Lebanon, immigrating to France in 1945 when he was just 17 and where he pursued studies at IDEC in film screenwriting and won the Pelman prize in 1962 for 2 film reportages, Pas de pitié pour les aveugles et Les cancéreux.
Katcha wrote 25 novels including Un homme est tombé dans la rue in addition to two theatre pieces.
He also cooperated with French film director of Armenian origin Henri Verneuil co-screenwriting for Le Casse (English title The Burglars) starring Jean-Paul Belmondo and Omar Sharif and in Mayrig starring Claudia Cardinale and Omar Sharif.
His theatre pieces are Le Repas des fauves in 1960[1] and La Farce in 1963 (with mise en scène by Jean-Jacques Aslanian).
His works have been translated into many languages including English, Spanish, German and Armenian in separate covers or through literary journals like «Գրական թերթ» and «Գարուն».