Black Harvest — M.C. Planck

The final chapter in the saga of Christopher Sinclair, mechanical engineer turned priest of war. Be careful what you wish for. Christopher finds himself on a throne, squeezing taxes, and guarding against incipient rebellions. This is a far cry from his democratic socialist revolution. But the danger is not limited to self-betrayal. He has seen the face of his true enemy, and it is a face of nightmare. Immortals and nigh-immortals have plans for him, plots that span a hundred thousand years, and traps of unimaginable deviousness. Against all this, what can one reluctant ruler do? The answer, of course: build a bigger bomb.