This show was born from the potential from it's parent show, The Man From UNCLE, in a fantastic episode called "The Moonglow Affair." However, due to some mysterious fluke the producers changed the actors in the lead. This was a fatal flaw: not due to the actors, but their chemistry was very far off.
The plots of "Girl" were troubled and not very interesting. Even the supposed 'best' episode, "The Mother Muffin Affair," (starring Boris Karloff in drag), is at best a meddling excuse for a show. Such a disappointment.
If "Girl" can prove anything, it's that sometimes even the best of intentions can bear no fruit. A real shame, too.