Marnie is narratively and technically artless — literal and obvious and shrill and nearly naked in its themes and concerns, a story clumsily built around Freudian repression. Its psychology is facile; its score is overbearingly dramatic; and director Alfred Hitchcock seems hostile toward even the most basic realism with his rear-projection drives and the mechanical horseback riding of the fevered climax. The technique of Marnie is downright standoffish, easily read as laziness or incompetence.
Yet Marnie is not the travesty many people think.

It might sound like a lame excuse.
The Psychopathic Chicken (and Other Lessons of Evolution)