The Sisters
Two sisters climbing the ranks of Dublin’s criminal justice system. A murder case that could change their lives forever. The Sisters is a gripping new thriller from one of the most exciting voices in crime fiction.
In this prequel to the international bestseller The Ruin, set ten years prior, bright-eyed Carrie Ryan is at the very start of her career. When she has a hunch about an ongoing murder investigation, she knows it could be her only chance to prove herself and truly break into the “boys’ club” of Dublin’s police force.
Carrie uncovers this make-or-break moment in a case file that her sister Aifric, a newly qualified barrister, leaves on their kitchen counter: Robert Collins has been charged with the murder of his girlfriend after a fight in a local pub. All signs point toward a guilty verdict, but both sisters quickly begin to find evidence that complicates the story. All the while, Carrie is very aware that she’s crossed the line—if the detective sergeant running the investigation finds out she’s been messing around with his case, her career will be over before it has begun.
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Dervla McTiernan
Number-one internationally bestselling author Dervla McTiernan is the critically acclaimed and award-winning author of six novels, including the much-loved Cormac Reilly series and two number-one bestselling standalone thrillers, The Murder Rule and What Happened to Nina?
Her books have sold over 1 million copies around the world and What Happened to Nina? is currently in development for screen adaptation. Before turning her hand to writing, Dervla spent 12 years working as a lawyer in her home country of Ireland, before relocating to Western Australia, where she now lives with her husband, two children and too many pets.
DI Cormac Reilly
DI Cormac Reilly consists of four primary books, and includes two additional books that complement the series but are not considered mandatory reads. The current recommended reading order for the series is provided below.

