How old were the actors in La 7ème cible (1984)?

Bastien Grimaldy, a man driven to heightened anxiety as the plot against him begins to take effect. Bastien's personal relationships give him enough cause for anxiety -- between his new lover Laura and a feisty mother, life provides its own insecurities. When he goes to the police with his problems, Bastien is assigned an off-beat inspector to protect him but is still faced with skepticism about his dilemma.