Hostage - Robert Crais

When a convenience store robbery goes horribly wrong the teenage gang who perpetrated the crime make a run for it. Hotly pursued by the police they crash into the suburban home of an accountant and take the family hostage. An armed seige ensues. It's the last thing the local sheriff wanted - after all he left the force in L.A. because of the stress.
But the gang have chosen the wrong accountant to hold hostage. He works for the mafia and he holds all the local family's financial records. Soon the mob are on the scene. A nightmarish, high-tension three way stand off develops.