Chapter 1. Errare Humanum est -- Chapter 2. Send another sample, please -- Chapter 3. Mosquito in the bag -- Chapter 4. Enigma -- Chapter 5. An unwanted passenger -- Chapter 6. Persistent anemia after hemopoietic cell transplantation -- Chapter 7. What lies beneath -- Chapter 8. Dial M for haeMolysis -- Chapter 9. Rash and hypotension during transfusion -- Chapter 10. Breathless -- Chapter 11. Regular transfusions, iron and teenage pregnancy -- Chapter 12. Woman with slurred speech and thrombocytopenia -- Chapter 13. Strong tea or Coca-Cola -- Chapter 14. With a little help from friends -- Chapter 15. Rare blood.