Andrea Bartz is an American author and writer known for her novels in the thriller and mystery genres. She gained popularity for her debut novel, "The Lost Night," which blends psychological suspense with themes of friendship and betrayal. Following that, she wrote other notable works, including "The Herd" and "We Were Never Here." Bartz often incorporates elements of contemporary life, social media, and the complexities of relationships into her narratives. In addition to her fiction writing, she has a background in journalism and has contributed to various publications. If you have specific questions or need more detailed information about her works or background, feel free to ask!