HALVARD SOLNESS, Master Builder.
  ALINE SOLNESS, his wife.
  DOCTOR HERDAL, physician.
  KNUT BROVIK, formerly an architect, now in SOLNESS'S employment.
  RAGNAR BROVIK, his son, draughtsman.
  KAIA BROVIK, his niece, book-keeper.
  MISS HILDA WANGEL.
  Some Ladies.
  A Crowd in the street.

  The action passes in and about SOLNESS'S house.