Giving the ancient structure a thorough examination, to ensure that it was sturdy enough to take her weight, Cathy began to climb with the agility of the creature that gave its name to her profession - the cat.
The clinging nature of her garments was of vital importance in this respect, as any clothing that could snag and tear in a situation like this would have been both a hindrance and a danger.
In fact, aside from the wall and the securely locked wrought iron gates, there was very little sign of there being any preventative measures having been put in place to deter trespassers from getting into the grounds.
Her gaze drifted further afield, towards the mansion house about one hundred yards in front of her.
Also of leather were the flat soled, knee length boots that she wore.
The only other accessory to this all black ensemble was the rucksack she carried, which not only held the tools of her trade, but also served as a convenient carrier for the jewellery, silverware, cash and various other items of value which she habitually acquired on such ventures.
For several seconds, Cathy remained motionless in the lee of the wall; staring upwards and watching for any lights or movement in the windows above.
Without hesitation, she began to look for a way to scale the walls up to this potential point of entry.
It didn't take long to locate what she sought; a stout drainage pipe that disappeared into the darkness above her only a few feet to the right of her intended goal.