Based on the world of Firefly by Joss Whedon

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Double...Double....

Cat stretched her length, hooking her long ankles around the supports of the catwalk and letting her long muscular body fall. She then hung suspended from the metal and pulled herself up in a powerful sit up. She could see no one under her, which was unusual since the big merc, Jayne seemed to sense when Cat was half dressed and working out, but today the cargo bay was quiet. Quiet was good for concentration and to let her overactive mind relax for a few minutes, away from the pressure of protection.

The muscles in her legs could feel the hum of the ship's engines even through the mesh floor. Money that they had gathered from the base destroyed only months ago had gotten the Firefly class back to tip top shape as Kaylee would say and even helped with some cosmetics repairs long since needed. Cat had used hers mostly to give her charge new life, toys, and clothes that befit a nine year old, plus the added food to feed the large cat that wandered the ship now.

"Umm....Cat?" A small voice echoed off the bulkheads as her eyes looked down at the ground. Kitty, her brown hair messy and sweaty from god knows what teased her face and blue eyes. Batha sat next to her and almost dwarfed the little girl as much as the leather bound book in her small hands.

"Kitty, I'm busy." She growled, but shook her head when the little one gave her a pair of sad eyes. "What is it?"

"Well, you see...I was looking at that book of holidays and customs that they celebrated on Earth that was...."

A sigh escaped Cat's lips, one that had seemed to proceed every time Kitty mentioned something from that blasted book. It reminded her to thank Inara again for giving it to the curious little girl.

"It's called All Hallows' Eve or Halloween."

Cat resumed her workout so that her muscles wouldn't get stiff. "Yes, I've heard of it, but I'm not thinking Mal is gonna let you hang dead bodies all over his ship, Kid.