Ch. 1. Beginnings -- Ch. 2. Internal combustion -- Ch. 3. Smoke and mirrors -- Ch. 4. A can of worms -- Ch. 5. Stamping out cancer -- Ch. 6. Unconventional backwardness -- Ch. 7. Very special cancer viruses -- Ch. 8. California viruses -- Ch. 9. The revolution of '76 -- Ch. 10. Transmitted in error -- Ch. 11. Genes bearing gifts -- Ch. 12. Picking up the pieces -- Ch. 13. Shilo's cane -- Ch. 14. A horse race -- Ch. 15. Hidden connections -- Ch. 16. A three-ring circus -- Ch. 17. The Cornell minicomputer -- Ch. 18. A hundred years war -- Ch. 19. Out of dark woods.