Death Comes for the Fat Man — Reginald Hill

Not for a second did Pascoe admit the possibility of death. Dalziel was indestructible. Dalziel is, and was, and forever shall be, world without end, amen...
Chief constables might come and chief constables might go, but Fat Andy went on forever.

Barreling his way into an investigation of possible terrorist activities, Superintendent Andy Dalziel is caught in the blast of a huge explosion at a video shop -- and only "Fat Andy's" considerable bulk prevents his colleague, Chief Inspector Peter Pascoe, from suffering a similar fate. Now Dalziel lies on a hospital bed barely clinging to life, while Pascoe remains determined to find those responsible.

But the truth is not always cut-and-dried, and sometimes those who are sworn to terror's destruction are even more dangerous than the foe they wish to annihilate.