Watch Brothers and Sisters season 4 Episode 16 - Leap of Faith. Luc’s visa issues cause monumental problems for Sarah, who not only struggles with her feelings for him, but worries that she might lose him again – this time to another woman. Meanwhile, Rebecca wrestles with Justin and with herself to move on after a huge loss, Kevin discovers breaking up with Robert is hard to do, and Holly thinks she has found the hidden value of Ojai Foods.