Cracks like whiplash
A hot tip. A disastrous stakeout. A DI shot, blamed and about to lose everything.
The Major Crimes Unit of Thames Valley Police are poised to solve two murders. But the stakeout turns deadly, leaving one of Detective Inspector Nikki Ross’ team fighting for their life and her shot, blamed and about to lose the job she loves.
Until she’s thrown a team up with a top-secret AI and she may yet save her career. It’s a double-edged a covert partnership with a not-so-Robocop AI and its enigmatic handler and only seven days to solve an unsolvable cold case. But then Nikki is dragged into a live one that no one else is taking seriously and she can’t let the killer prowl free. While she’d risk everything to prove herself, how can she when the cost might be another person’s life?
In the heart-stopping race to prevent another murder, the line between justice and sacrifice has never been thinner.
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Karen Guyler
Karen Guyler writes gripping thrillers featuring impossible choices, twists you won’t see coming, and unforgettable characters.
Her debut series Dateline Zero was longlisted for the prestigious Crime Writers’ Association Debut Dagger—an award that has launched the careers of many bestselling crime writers.
Karen’s books have been praised by readers for their fast pace, smart plotting, and characters you can’t help but root for—even when they’re making terrible decisions.
When she’s not writing, Karen can be found reading crime fiction (obviously), walking her dogs, and plotting her next twist. She lives in the UK with her family.
DI Nikki Ross
DI Nikki Ross consists of four books. The current recommended reading order for the series is provided below.

