They are the Pessarane Behesht. Sons of heaven. Spawned in war-torn Beirut. Nurtured in revolutionary Iran to wreak vengeance on the enemies of Allah. When the freighter Clarion Call disappears mysteriously in the Gulf, she is carrying a secret consignment of French arms for the Pessarane Behesht in return for the release of a diplomat held hostage. Ex-SAS Major Robert D'Arcy, whose international security firm was protecting the ship, finds himself in the midst of a deadly battle of wills between state-sponsored terrorists and rival Western intelligence agencies with conflicting interests. As the Iranians resort to kidnap and assassination in their thirst for revenge, D'Arcy must act alone to prevent a horrifying carnage.