Gaslight.

For Brooke, life is good. She's a successful Washington DC architect and happily married. After her father's passing, she receives a substantial financial windfall. She suffers from mental exhaustion and seeks the help of a therapist. Soon, her inheritance begins to disappear. Her life becomes unstable as she becomes unsure if her husband and loved ones are plotting to steal her inheritance or if she's losing her mind. The truth reveals itself in a climax of lies, deception and violence that will keep you guessing until the fatal end.