Shadow Ranch is a ranch in Arizona near Dry Creek. It was owned by Meryl Humber in the 1880s and bought by Ed and Bet Rawley in 2004. Dave Gregory was their foreman, Tex Britten was their head wrangler and Shorty Thurmond was their cook.
In 2004, it was haunted by Dirk Valentine's phantom horse in order to scare the Rawleys off their property so that his treasure could be found. Nancy, Bess and George were supposed to vacation there, but Bess and George's flghts kept getting delayed until Nancy had already found the treasure.
It also appears in 2011 in an alternate story, Nancy Drew Mobile Mysteries: Shadow Ranch.