Falling Glass by Adrian McKinty

Audiobook read with the classic Irish brogue by Gerald Doyle. There's a great scene in the beginning where Killian, sent to either kill or get money from a man with huge gambling debts, talks his way out of a desperate situation where the debtor gets the drop on him with a shotgun. In the end, both he, the man, and Killian's boss make out financially well. Classic

Killian, having long retired as an IRA fixer, has watched his real estate investments go bad as the economy tanks in Ireland.  So when the offer of an extremely well-paying job comes along, ostensibly simple, to find and retrieve the ex-wife and daughters of an extremely wealthy airline owner, Killian agrees to take the job.  Nothing is ever simple nor as it appears, and while Richard Coulter, his employer insists it's only about getting his daughters back, there's also a laptop that figures in the equation, not to mention an ex-military Russian who wants to earn the reward, too and will stop at nothing to get it.

There's an interesting subtext to the book:  an examination and brief history of the Pavee** travellers, not Romani Gypsies as the author is at pains to point out, but some say the original settlers of Ireland. Some readers may find these digressions as distracting;  I did not. I enjoy a little social history with my fiction. These "tinkers" as they are also known, earn their living as free-spirited wandering carnival operators.  Subject to extreme hostility and prejudice, Killian has roots in the community which helps him extricate himself, Rachel and the girls from the devastating information they discover on the laptop, information that could destroy the peace-process and bring down the government and many wealthy men.

This story will grab you and not let go until the end.

**From the Wikipedia: "The historical origins of Irish Travellers as an ethnic group has been a subject of academic and popular debate. Such discussions have been difficult as Irish Travellers left no written records of their own.[23][24]In 2011 an analysis of DNA from 40 Travellers was undertaken at the Royal College of Surgeons in Dublin and the University of Edinburgh. The study provided evidence that Irish Travellers are a distinct Irish ethnic minority, who separated from the settled Irish community at least 1000 years ago; the claim was made that they are distinct from the settled community as Icelanders are from Norwegians.[25] Even though all families claim ancient origins, not all families of Irish Travellers date back to the same point in time; some families adopted Traveller customs centuries ago, while others did so more recently.[26] It is unclear how many Irish Travellers would be included in this distinct ethnic group at least from a genetic perspective.

    There has been a wide range of theories speculating their origins such as that they were descended from those Irish who were made homeless by Oliver Cromwell's military campaign in Ireland in the 1650s, or possibly from the people made homeless in the 1840s famine due to eviction, or the descendants of aristocratic nomads the Clan Murtagh O'Connors in the Late Middle Ages. Their nomadism was based on cattle-herds or creaghts.

    There is evidence that, by the 12th century, the name Tynkler and Tynker emerged in reference to a group of nomads who maintained a separate identity, social organization, and dialect.[23] The genetic evidence indicates Irish Travellers have been a distinct ethnic group in Ireland for at least a millennium."