Only the Cat Knows (Thorndike Press Large Print Mystery Series) Unknown - 2007

From the publisher

The prolific and delightful Marian Babson has penned another stupendous cozy for cat lovers. Vanessa has been rushed to hospital, having been found unconscious at the foot of the stairs. Was it an accident or something else? Now, smiling weakly, suffering from a head injury that has left her with complete amnesia about the fall, the events leading up to it, and even the people closest to her, here she is, back in their midst. Or is she? In fact, the real Vanessa is still in a coma and her devoted twin brother Vance, superbly disguised as a woman, has taken her place! At the home of the reclusive millionaire who maintained Vanessa, Vance joins the self-absorbed retinue, determined to discover whether one of them had attempted to kill his sister.
There is an unsavory roue who claims to be Vanessa' s lover and assorted women who declare themselves her best friends. Others keep silent but seem to be waiting for Vance to put a foot wrong. Actually, Vance can handle all those. Only one thing really worries him: Gloriana, Vanessa' s beautiful Angora cat who regards her " mistress" with a dark suspicion. If the cat can' t be won over, then the whole deadly charade will fall apart.
"Only the Cat Knows "is Babson' s latest in a long line of wonderful mysteries offering her special mix of mayhem, murder, and cats!