Best friends Kari and Lucas are thrilled to go on safari in Africa. They're fascinated by the lions, giraffes, and zebras. Even more intriguing to Kari is the c

If it hadn't been for Lucas's photographic memory, they might not have remembered the man. It had been almost a year since she and Kari noticed him copying a fa

When fourteen-year-old best friends Kari and Lucas travel to an archaeological dig in Kenya with Kari's uncle Geoff, they help expose a smuggling ring.

There are some things which cannot be learned quickly, and time, which is all we have, must be paid heavily for their acquiring. They are the very simplest thin