 
      The Donor, Helen FitzGerald's fifth novel, is a nail-biting psychological thriller about a single dad's horrorfying dilemma. Will, who has given up everything to raise his twin daughters, has a terrible choice to make when both girls suffer kidney failure age 16.
 
 Should he save one child? If so, which one?
 
 Should he buy a kidney - be an organ tourist?
 
 Should he sacrifice himself?
 
 Or is there a fourth solution - one so terrible it has never even crossed his mind? 
