Need job interview advice. Please.

[Luckdragon]

Luckdragon: 
I am posting this way off topic question here because I have found many 
great calculating minds on this website and I would really value any 
insight any of you may have to offer.

A few years ago I was employed in a job I loved, but working for an 
employer who lost 90% of her original employees within the first year 
of business because she used her employees as scapegoats for her 
mistakes.
My first year earned me a merit raise and recognition, however soon 
afterwards her mistakes revolved around my work and I became her next 
victim. Not wanting to have my reputation tarnished I quit, and went 
back to my previous career. For quite a while now I have found myself 
really missing the job I did with her company and have decided to look 
for a similar job elsewhere.  My dilemma is in what do I say to 
prospective employers when asked why I left. If I am truthful and say I 
left due to conflict with my employer a red flag is instantly raised. 
Does anyone have any advice on how to creatively, but truthfully get 
through this question.
Thanks in advance for any help you can offer.