However, some clues suggest she may have been agnostic or non-religious.
Here's what we know:
* Lack of public declarations: There is no known record of Christie identifying with a particular religion or attending religious services.
* Her work: Some themes in her novels and stories, such as the importance of human reason and the fallibility of human nature, could be interpreted as reflecting agnostic or secular views.
* Her husband's beliefs: Her second husband, Max Mallowan, was an archaeologist and a humanist, who was not religious. It's possible that his views influenced her own.
Ultimately, we cannot say for certain what Agatha Christie's religious beliefs were. However, the available evidence suggests she may have been agnostic or non-religious.