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.
A Crowd in the street.
The action passes in and about SOLNESS'S house.