Blood money - Arlene Hunt

Death and violence are all he's known, and Pavel Sunic vows to avenge his sister Ana's death when she pays the ultimate price to secure his release from a Bosnian prison.
The bloody path he creates leads to Dublin...
Meanwhile, John Quigley struggles to keep his PI business, QuicK, afloat.
His partner Sarah Kenny is still missing.
John takes on a case where the evidence points to suicide. Yet why did Rose Butler's daughter, a promising doctor and mother of two, choose to die alone in a shabby hotel room? Stretched beyond capacity between his case and his personal life, now Pavel Sunic threatens to bring the whole pack of cards crashing down.
Blood Money: first do no harm, second, run for cover.