R. A Montgomery

You trace a desperate anonymous caller to a house on the site of a former Civil War prison. Is it safe to go in alone? Depending on the choices you make, will this house of danger be your biggest case or your last?.

The reader's decisions control the course of a story in which the coolest counselor at Camp Pine Tree has disappeared.

On your first solo journey to find the Lost Continent of Atlantis, you failed to bring back proof of your success. Many people think that you imagined the whole thing-or worse. Now you and your colleague Horton James III are returning to document this amazing otherworld. But back below the surface of the sea dangers abound. A treacherous king lures you to riches; rebel slaves lure you to help lead a revolt; and the evil Nodoors aim to capture you...

You're traveling to Salisbury, England, to research the megalithic arrangement at Stonehenge, as well as some unusual crop circles nearby. Time is of the essence -- world leaders gather in worry as hurricanes rip cross-continent, tropical storms surge inland, and animals' strange new migration patterns cause environmentalists extreme concern.

You are a race car driver alone in Africa where the course is tough, hazardous, and risky, with unscrupulous competitors. Floods, elephants and local guerrillas are nothing compared to the drivers who will do anything to win. The race course you choose may spell the beginning or end of your career.

A machine that could stop radiation would shift the balance of world power overnight. In the right hands, it could herald a new age of world peace. In the wrong hands, it would spell disaster. The brilliant Dr. Wogan has designed such a machine. But she has gone missing, along with the plans. As her right-hand assistant, everyone looks to you to help find her.