The Shades Of Gray Series follows the adventures of Kat, a woman with no memory of her past who is called the Pandora Project by those who hunt her, and Kim, a woman leading the life of a legal assassin called a Life Closer. The world they live in is plagued by clouds that prevent the sun from shining down on the land called Dry Clouds, making all who live in Noir forced to live in endless night.

Kat searches for clues to her past while androids called Un-Men and human bounty hunters try to kill her, and Kim searches for who murdered her mother. The two women's paths collide, and they form a shaky partnership to unravel the mysteries that haunt their lives and they try to protect one another from those who do not wish for them to discover the truth.

Everyone's soul is marked by a color. Which shade of gray will they hold to?

#4 Shades of Gray: Sisters :

A truth?
Or a lie?

Had something from Kat's (the Pandora Project's) past been revealed, only to be taken back? What would she do to hang on to a sliver of hope? How far would Kat go to have what she truly wanted?

Two stand in the balance...
But only one can be...

Kimberly Griffin (the Phoenix) was torn between what she wished to be true and what she feared she'd discover. What would she do when she found out the truth?

A new Life Closer...
A call for a Life Closing...

The Phoenix's head had been put on the chopping block. While she searched for the truth, could she avoid her own assassination? Or would the Life Closer (the Doctor) diagnose her death?

Shades of Gray Science Fiction Action Adventure Mystery Thriller Serial Series:
(STARTING POINT QUADRILOGY)
#1 Shades of Gray: Noir, City Shrouded By Darkness
#2 Shades of Gray: From Moscow, With Love
#3 Shades of Gray: Cerberus Versus Pandora
#4 Shades of Gray: Sisters