Please answer the following question: I am trying to decide whether it's worth it to invest in this film proposal. Can you help me answer a few questions? If you can't, please say "No I can't". Question: who did sam kill? Movie title: Brothers Movie plot: Sam Cahill (Tobey Maguire) is a Marine captain about to embark on his fourth tour of duty. He is a steadfast family man married to his high school sweetheart, Grace (Natalie Portman), and he has two young daughters, Isabelle (Bailee Madison) and Maggie (Taylor Geare). Sam's brother Tommy (Jake Gyllenhaal) is being released from jail for an armed robbery, before Sam departs for Afghanistan in October 2007. News comes that Sam's helicopter has crashed over the water, killing all of the Marines aboard. In reality, he and a hometown friend, Private Joe Willis (Patrick Flueger), have been taken prisoner in a mountain village. With Sam gone, Tommy attempts to redeem himself in the eyes of his family by wrangling old friends to help with kitchen repairs for Grace and the girls. Grace slowly sheds her previous resentment towards her brother-in-law. As months pass, Grace and Tommy bond over their mutual mourning, culminating in a passionate fireside kiss. They immediately regret it afterwards and do not take their attraction any further, though Tommy continues to win the favor of his nieces. Meanwhile, Sam and Joe are tortured by their captors, forced to make videotaped dismissals of the military and their mission, though only Joe cracks. The captors eventually deem him useless and force Sam, at gunpoint, to beat Joe to death with a lead pipe. Sometime later, Sam is rescued. Once Sam returns home, he drifts through a cold, paranoid daze, showing signs of severe post-traumatic stress disorder. Refusing to explain to his family what happened while he was in Afghanistan, Sam also lies to Joe's widow that he does not know how Joe died. He also believes Tommy and Grace had a sexual relationship in his absence. During Maggie's birthday party at her grandparents' home, a resentful and jealous Isabelle claims that Sam's paranoid assumptions are true: that Tommy and Grace slept together. After the family returns home, Sam becomes enraged, destroying the newly remodeled kitchen with a crow bar and pulling a pistol on Tommy who...
A:
Joe