Siblings John And Joan Cusack Played Brother And Sister In Martian Child (2007)
John and Joan Cusack shared the screen for the first time with relatively minor roles in Class (1983). After that, they worked together numerous times. The movie with one of the best ratings was High Fidelity (2000), though in this movie, the actors didn't play relatives. Joan Cusack was portraying a mutual friend of Rob (John Cusack) and and his ex.