A Crop of Circles — Gerald Duff

Illegal Aliens: A craft from deep space has been forced to land in an Illinois cornfield, and only a twelve-year old boy named Torbert can see it for what it truly is. The meth cookers next door, the drug dealers in East Saint Louis, and even Torbert's own family have no idea what's been forced to Earth to await a way home. In the meantime, the two-member crew of the craft comes to know Torbert, adjusts to life in mid-America, and interacts with the local inhabitants of this part of a small planet in an isolated galaxy. Complete with road trips to Memphis for the blues and New Orleans for the voodoo. Torbert and the crew of the scout ship - Felder and Sobit - struggle to find their way through all obstacles to escape from a crop of circles.