The Secrets of the Outpost

Get away! Get help!
Her brain was shouting at her.
After a moment, she activated the opening command.
She couldn't leave him there alone. She couldn't...
The doors opened again.
Blue eyes stared at her from the impenetrable darkness.
In the deafening silence, she finally began to scream.

In a research base on an inhospitable planet, thirty people live and work in dire conditions. They all have ambition, dreams, and secret they brought along from distant Earth.
The facility will close in one month.
One of the scientists is found dead under suspicious circumstances and in five days a spaceship will come carrying a rescue team to evacuate all personnel.
But five days is a long time. Shynar, the base commander, launches an investigation that will lead her to a mysterious killer. Someone isn't who they claim to be, and between clues and false leads, Shynar and her team--hunted by a dark, unsettling shadow--will need all their capabilities in a race against the clock to find out the truth and the secrets of the outpost.
Five days to survive or be killed...