The problem: X equals your father, a bonafide 
mathematical genius who accomplishes his best work 
in his twenties, but succumbs to mental illness by fifty. 
You show similar signs. Are you doomed to a similar fate? 

On the eve of her twenty-fifth birthday, Catherine begins 
a touching and powerful journey that explores the 
crossroads of science and humanity. The death of her 
brilliant father produces an unexpected suitor who takes 
a sudden interest in her. A mysterious mathematical 
proof appears. Is it Catherine’s? Or is it her father’s? 

Charged with mystery and surprise, this compelling 
story has captivated audiences world wide. Winner 
of the 2001 Pulitzer Prize. 

“AN EXHILARATING NEW PLAY.” 
T H E  N E W  Y O R K  T I M E S 

“DAVID AUBURN'S EMOTIONAL AND CAPTIVATING 
DRAMA…IS A BEAUTIFULLY WRITTEN PLAY.” 
L O N D O N  T H E AT R E  G U I D E 

“GREATLY ENTERTAINING AND REFRESHINGLY 
INTELLIGENT THEATRE FARE.” 
C U R TA I N  U P 

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