Armstrong’s bestseller Mischief became the basis
for the movie Don't Bother to Knock, which starred a young Marilyn Monroe as
a mentally unbalanced baby-sitter. As in Bus
Stop,
Monroe gives some of her best work, proof that she was more than just a dumb
blonde. Mischief would do for babysitters what Psycho would later do for showers. Armstrong’s
book started out as a play entitled Little Nell, a wry twist on the idea of the poor
young Dickensian heroine. She later changed the story to the now familiar plot
of the babysitter who seems reliable, but quickly displays her disturbed
nature. The elevator man’s niece is a last minute replacement for the husband’s sister who had a previous engagement. Nell, the
babysitter, seems almost mentally challenged at first, but her total lack of
morals and concern for the future are slowly revealed to the reader. The book
is tightly and expertly written and touches upon the fears of every
parent.
Two themes begin to resonate through the works of Armstrong at this
point. The first is the idea of the strong woman. Women who might appear slight
in appearance, but are made of steel inside have replaced the dependent girls of her first few efforts. In Mischief, Ruth Jones, the child’s mother, is one
such heroine. For three quarters of the book, she is merely the companion to
her husband who has just wowed an audience with his speech. She is only given a
few polite words to murmur in appreciation of her
spouse. However, when she feels concern about her daughter being in danger, she
immediately rushes to action. She travels through New York City alone and
confronts Nell without thought to her own safety.
These women are typically married, happy, and most strong in defending
a family member.
The other idea that starts to come through in her work is the idea of a
collective unconscious. Armstrong would use the notion in many of her later
novels. The subtle idea that a number of characters could share an emotion
without discussing it appears in a number of her works. In Mischief, she manages to imbue several of her
characters with the realization that they share the guilt for this situation.
The child’s brush with danger from the deranged babysitter could have been
prevented with intervention from any number of people. All
the characters “could” have done something to stop the crescendo of fear and
abuse. While none of the characters express this concern verbally, it passes
through the thoughts of several of the major characters. The couple staying downstairs might have investigated the crying earlier or the
elevator operator might have suggested another babysitter. Thematically tied to
the idea of helping each other, Jed, Nell’s date for the evening, even recalls
a fight he had with another woman about her desire to give money
to the bums on the streets. The notion of contributing to help others runs deep
in the novel.