Private Dublin by James Patterson

In L.A., a star-studded movie premiere descends into chaos when a shooter opens fire on the crowd.

The culprit escapes and boards a plane to Dublin, Ireland.

Jack Morgan, the head of the world's largest private detective agency, is at the premiere and his partner Justine is badly wounded in the shooting.

Following the gunman to Dublin, Jack soon realises that this is much bigger than a single shooter. What Jack thought was a random act of violence was actually a targeted attempt on his life.

To ensure the safety of those he loves most, Jack must find the person who is so intent on his downfall - and eliminate them once and for all.