When a visit to a Colorado dude ranch turns deadly, it's up to photographer Callie Cassidy to corral the killer...

As maid of honor (aka grande dame) in her best friend's upcoming wedding, Callie wants to plan the perfect bridal shower. And what could be better than a girls' trip with their posse of friends?

The women jump at the idea and suggest a destination—Moonglow Ranch, a serenity retreat-slash-dude ranch owned by one friend's aunt and uncle.

When they arrive, Callie is less than enthusiastic. Serenity doesn't come easily to a former investigative photojournalist. Plus, her horse is stubborn as...well, a mule. She's warned to be on the lookout for snakes. Worst of all—gasp!—Moonglow only serves healthy food. Still, her friends are having a great time, and even Callie's golden retriever Woody and tabby cat Carl seem right at home on the ranch. For their sake, she tries to tap into her inner Zen.

Then the conniving wife of the town's most powerful man interrupts the party and threatens the ranch's proprietors. Callie worries the trip is destined for disaster.

Later, Callie finds the woman's body in the stable, apparently trampled by a horse. Or did she die from a snakebite? Or—as Callie suspects—could something even more sinister be at work?

Answers are as difficult to find as a needle in the haystack. And when the police chief accuses the ranch owners of murder, Callie realizes she'll need to lasso the real outlaw—before the wrong people end up in the pokey.