Inspirational and New Age novels have been gaining popularity, along with their nonfiction counterparts, especially since the September 11, 2001, terrorist attacks. Readers look for stories of hope and fulfillment, with characters whose faith helps them cope. The category can range from nondenominational tales, which stress spirituality but don't endorse any particular religion, to evangelical Christian stories that apply traditional Christian teachings and morals to their stories. Some of these books sell millions of copies, and toptier authors regularly earn six figures.

Inspirational and religious fiction encompasses every other genre of fiction. Mysteries set in religious communities or with church leaders as protagonists have been around for years. Science fiction infused with spirituality is becoming more popular. Even romances that explore issues of faith and religiosity are finding a readership eager for such ingredients in their novels. Violence has become more acceptable in inspirational fiction, although it's still muted compared to other genres. However, references to alcohol and sex (even marital sex) are still considered taboo.

Inspirational fiction isn't limited to religious presses. Harlequin launched a new line in late 2004, with planned releases of a new title every other month in 2005. These titles cover everything from the tribulations of dating to juggling family, social, and work obligations, but the underlying theme in all the stories is how women stay true to their Christian beliefs and values in today's world.

Although Christian fiction dominates the market, there are opportunities for writers to explore other faiths. Finding the spiritual enlightenment of Buddhism in a materialistic American society, determining the relevance of ancient Jewish traditions in the twenty-first century, or seeking the true teachings of Islam in a world where extremism grabs the headlines — these themes and others have made several appearances in recent fiction titles. The biggest mistake most writers make is sounding too preachy; editors look for well-told stories with realistically flawed but spiritual characters and an expertly gentle touch when it comes to moralizing.