Wendy is released from a psychiatric hospital and must take pills regularly to suppress the symptoms of her mental illness. After Wendy decides to stop taking her medicine, she starts to hear terrifying voices in her head.

The New York lawyer Willam Singer receives three letters, that his father's cousin from Germany wrote to him over the last 5 decades, describing, that she hosted three people in her cellar for more than 60 years. Singer tries to find out, if she wrote the truth.