50-year-old roxy wallace was a bodyguard called bob , who lived a reclusive life , plagued by depression .
the long-term condition was caused by bob 's belief that he had been born into the wrong body , a turmoil which made it impossible to have a meaningful relationship with his son william .
but in october 2013 , roxy finally revealed the truth to 44-year-old jo , her wife of 20 years .