This low-budget horror film set in a rural area is surprisingly inventive and enjoyable. "The Lonely Ones," made in 2004 and released in 2006, is a very cheaply produced slasher movie centered around a group of college students—five women and four men—who rent a large, modern cabin in Arizona. The cabin belongs to the family of one of them. Things go wrong when they realize they’re being hunted by something or som…