Growing increasingly fond of lovely Claire Amory (Nancy Gates), Ben Cartwright must deal with Claire's invalid brother Carl (Wesley Lau). Cruel and manipulative, Carl exploits his infimirities to force Claire to marry Ben whether she wants to or not. A real-life accident forced Lorne Greene to wear an eyepatch throughout this episode. Written by Mort Thaw and Lee Pickett, "His Brother's Keeper" first aired March 6, 1966. ~ Hal Erickson, Rovi