Summary: Faith experiences the 'Butterfly Effect' when a demon gives her the opportunity to go back in time and change moments of her life that she regrets. But she wasn't counting on the devastating effects that occur as her reality reconstructs.

Disclaimer: I don't own these cool people! Faiths prison song is a quote by Dorothy Parker.

A/N: This is set about mid-way Season 6. Hope you all like it!

Faith was sitting by herself in her cell contemplating her life and singing a song to pass the time that she had heard one of the other inmates sing.

Razors pain you

Rivers are damp

Acid stains you

Drugs cause cramps;

Guns aren't lawful

Nooses give

Gas smells awful

Ya might as well live!

She said the last line triumphantly with emphasis, half pleased that she remembered the whole damn thing, and half acting as though she was trying to convince herself that her now boring and meaningless life was really worth living. This promptly earned her a glare from the prisoners occupying most of the nearby cells. It's not like prison life was that awful, really. Three squares a day, even a bed to sleep. She'd definitely had worse.

It was just the long stretch of time where Faith was all alone with her thoughts and all she had to talk to was herself. She spent most of her days regretting her actions of the past and contemplating what life would have been like if she had chosen her path in life differently. You know, not tried to kill all her friends and all. She sighed and leaned against the wall accepting that it would be hours till any sort of activity would occur to take her away from the constant guilt slowly overtaking her mind.

She was immensely surprised when a deep voice from behind her contradicted that particular thought. "Faith." It said dramatically.

Faith spun round in alarm taking in the sight of the demon before her. He was tall and scaly and red like the devil.

"Who the hell are you?" she asked moodily raising her right fist ready to knock him out, her heart racing for some action.

"Whoa whoa, slow down Slayer." He put his hands up in a gesture of peace. "I'm not here to fight. I have come to offer you something."

Faith scoffed at this. "What could you possibly have to offer me? Other than a damn good kill of course." She advanced towards him threateningly.

He ignored her behaviour. "Faith you would be a fool to kill me and lose this offer. I have come to give you the power to change the past. I sense your desire for this." He puffed himself up importantly, like the know-it-all demon that he was.

"Sounds like a trap to me" Faith said glaring at him. "Why would you want to give me anything? Besides I don't trust evil demon fiends."

"Have you not learned by now that not all demons are truly evil?" The demon seemed truly offended. "To put it simply I'm as bored as you are and I want to play a little game."

"Yeah whatever." Faith muttered. Life couldn't be any worse than this, she thought. I'd do anything right now to get out of my head for a while. "Faith if you accept my challenge you will have the power to change your past, but I can only give you this power if you accept whatever consequences come out of it without complaint."

"Sounds great" Faith said sarcastically, accepting his offer in her own way, barely even considering what these consequences could mean. Faith had been incarcerated so long that it felt good to be reckless for once and to make a spur of the moment decision without thinking it over. It took her only half a second to realize that the thing she wanted most was to be a Scooby again. Fight on the team with Buffy again. Have friends. Have a life. Hell, yeah. That's what she'd been obsessing about for months in prison.

The demon handed her a shiny device and Faith looked at it confused. Before she could unleash a torrent of swear words as to questioning the function of the device, the demon grabbed it back and showed her exactly how to use it. Once Faith understood how it worked the demon disappeared. Faith shrugged and activated it to go back to the moment everything went wrong beyond repair. One of the biggest, most terrifying moments in her life that was always on her mind. The moment she killed Allan Finch.