Drifter John Walker has no friends, but he's so engaging that Maxie invites him over for dinner. The next day he moves on-and is later found dead in his motel room. What looks like a simple suicide quickly grows more complicated when police discover that Walker was living under an assumed identity. Maxie tries to fathom why he would choose to end his life where the U.S. highway system ends-and where Maxie just might meet a dead end of her own.