A heterozygous recessive snake (like your het ghost) will not look any different from a Normal. It only carries one gene, and the pattern/colors of the actual morph won't show without two.

Now, some het's are believed to have markers, like pieds, but they're not always present when a het is proven, or sometimes regular normals have the markings.

Only way to know if your 'het ghost' is honestly a het ghost, is to get a female Ghost and breed them together and see if any of the offspring is a Hypo (Ghost). I say an already visual Ghost because Het x Het pairings don't guarantee a visual morph right away and can take a long time to prove out.