After staggering out of a performance of The Dance of Death, August Strindberg’s turbulent portrayal of a marriage, one fervently hopes Tolstoy was right and that each unhappy family is unhappy in its own way. No other theatrical couple – not Edward Albee’s George and Martha, not Eugene O’Neill’s James and Mary Tyrone or Ezra and Christine Mannon – reach quite the depths of malicious combat achieved by Strindberg’s Edgar and Alice.