Shadow House

This is an Apple Books audiobook narrated by a digital voice based on a human narrator.

She's out to avenge her sister's death, he's on a path to self-destruction.
Heather Todd's life had never been easy, but when her sister died as a result of overcut cocaine, everything changed. Now she's determined to take down Sydney's notorious organized crime ring, vowing to ensure her sister didn't die in vain.
Ex MI6 operative turned world sailor, Sam Autenburg is on a bender after his partner died, also as a result of overcut cocaine. When one night things go desperately wrong for Sam, Heather comes to his rescue.
Taunting and goading him, she eventually convinces him to take on her cause and infiltrate the organized crime syndicate responsible for her sister's, and his partner's, deaths. Going after the brutal gang will be no easy feat, and in order to stop them, Sam and Heather must put their own lives on the line.
Together in loss and driven by revenge, Sam and Heather hunt for justice, and in doing so, begin their own path to redemption.
Can they find the evidence they need without getting caught? Are they strong enough to take on this fight without losing themselves in the process?
Find out in this action-packed thriller, filled with daring adventure and high-risk operations!