The Bone Fire by Martina Murphy

Pressure rises as a missing person's case has deadly crime gang connections... A fatal fire in a holiday let on Slievemore, Achill Island, leaves one person dead and another missing. When the fire is deemed arson, DS Lucy Golden and her team are tasked with solving the murder and locating the missing woman, Moira Delaney. As the case develops, the pressure builds when it transpires that Moira's father is a gangland figure and a suspect in three unsolved murders. If Lucy doesn't uncover what happened that morning in Slievemore, he will deploy his men to deal out his own sort of justice. Things get even more complicated when a laptop is uncovered that could ruin all that Lucy holds dear. As the net on the suspect tightens, Lucy faces a difficult choice - will she use the laptop's secrets to save herself and bring a murderer to justice, or bury them and save her career... and her life?

'If you want to start a new crime series, make it this one. It's one of the best I've ever read'