Murder at Gresham Downs

This is an Apple Books audiobook narrated by a digital voice based on a human narrator.

Murder at Gresham Downs is a revised and retitled edition of Farm Kill.  The West family finds itslef in a dystopian landscape after an earthquake. The place is deserted apart from a ten year old with severe communication difficulties.  He is a smart kid who uses his dog to help him get by.   As they explore the Wests find evidence of a fire, and then of  murder Jo West is captured by the murderer, who knows he has to kill them all.