Title: The Night of the Apocalypse - Daniel Easterman - book
Summary :
Religious leaders from numerous Muslim countries are meeting near Dublin in a top-secret conference that will determine the future of peace in the Middle East. For months, the secret services and security agencies have been on edge. It is whispered in high places that certain extremist Islamic groups are prepared to do anything to derail the negotiations.
But, against all expectations, it is an armed group belonging to a Christian sect which takes twenty-eight of the participants hostage and takes them to an unknown destination...
Declan Carberry, the head of the Dublin Federal Police and counterterrorism officer in charge of the case, must act quickly. The kidnappers have crazy demands, impossible to meet, and are executing a new hostage every day...