The reckoning by Martina Murphy

In an isolated house by Dugort pier a body is found. DS Lucy Golden is shocked to discover that the victim, Sandra Byrne, is a sister of one of her old school friends. To further complicate matters, Ben Lively, one of Lucy’s colleagues, is the chief suspect. Lucy must put aside her bias in order to uncover the truth. But the deeper she digs into Sandra’s life, the more the past starts to unravel and the less she seems to know. How do you solve a murder when all you have are lies? As Lucy desperately tries to sort out what is true from what is not, Rob, her ex-husband and ex-con, makes a reappearance. And when the reckoning for past mistakes finally arrives, nothing is what it seems.