A Leap in the Dark (1980)

Mauro, a dedicated judge, is deeply troubled by his older sister Marta's mental health struggles, as she has cared for him throughout his life. Though her spirits seem to lift after he introduces her to Giovanni, a charismatic yet morally ambiguous actor, Mauro’s protective instincts morph into jealousy. As their bond grows, Mauro grapples with his feelings, risking both their well-being and the fragile recovery Marta appears to be experiencing. The tension escalates as familial loyalty clashes with complex emotions, leading to a heart-wrenching exploration of love, envy, and the fragility of mental health.