When Christina, Grant and their two friends join their mystery-writing Mimi (and Papa!) on a trip to the "Mile-High City" of Denver, Colorado, they soon find themselves:
• Sleeping in a mysterious, haunted palace of a hotel! Deciphering mountains of clues to solve a mystery!
• Reading tattered old books to help solve the clues!
• Traveling through tricky tunnels to get to a scary ski slope!
• Meeting an amazing woman who once sailed on the Titanic!

But can the kids have fun, stay warm and solve a mystery all at the same time? Strap on your skis and come along and see!

LOOK what’s in this mystery - people, places, history, and more!
Denver winter weather • Rocky Mountain history, facts, and folklore • Mining history and folklore • Old West Santa Fe style buildings and architecture • America the Beautiful song lyrics and author bio • Rocky Mountain Railroads and Old West transportation facts • Anasazi Indian history, lifestyle, and facts • Learning how to ski • Brown Palace Hotel • LoDo (Lower Downtown) • Garden of the Gods • Pikes Peak • Cliff Place at Mesa Verde National Park • Eisenhower Tunnel.

Each mystery includes SAT words, educational facts, fun and humor, Built-In Book Club and activities. Each Carole Marsh Mystery also has an Accelerated Reader quiz, a Lexile Level, and a Fountas & Pinnell