U.S Postal Inspectors are called in when a  suburban couple are killed by a mail bomb. Suspicion immediately falls on the couple's  estranged and heavily in debt so…

当一对住在郊区的夫妇被邮寄炸弹炸死时，邮局的检查员被召来调查此次事件。猜疑立即落在这对夫妇的儿子身上，他们亲子关系疏远和同时又肩负沉重的债务，最让人怀疑的是他也恰好是一名海军弹药专家。