The Hawk (1993)

Housewife Annie Marsh (Dame Helen Mirren) suspects her husband might be The Hawk, a brutal serial killer. Complicating matters is the fact that she once was incarcerated in a psychiatric hospital. When she discovers she does not have the happy marriage she always believed and begins to piece together the times and dates of her husband's frequent absences, her fears begin to take hold, and her sanity deteriorates.