The Time Warp Trio find themselves in the Wild West of yesteryear, rubbing elbows with cowboys and Indians.

A lifetime of being bullied has left fifteen-year-old Billy angry and frightened, but when he is tricked into becoming Pestilence, one of the Four Horsemen of the Apocalypse, with the power to inflict diseases, he travels through time and memory to find Death in hopes of escaping his fate.

Using the magic treehouse, Jack and Annie travel to a monastery in the Swiss Alps where, with the help of St. Bernard dogs and magic, they seek the second of four special objects necessary to break the spell on the wizard Merlin's beloved penguin, Penny.

When eight-year-old Jack and his seven-year-old sister, Annie, travel in the magic treehouse to join a group of nineteenth-century explorers aboard the H.M.S. Challenger, they learn about the ocean, solve the mystery of its fabled sea monster, and gain compassion for their fellow creatures.

When the magic treehouse enables Jack and Annie to travel back to the Kansas prairie in search of "something to learn, " they gain an understanding of how hard life was for pioneers and they experience the terror of a tornado.

Cass finds herself alone and disoriented in a dream-like world, while back at home she is in the hospital in a coma with Max-Ernest desperately searching for a way to awaken her.

When nine-year-old Odessa Green-Light stomps out her frustration at being sent to her room after shoving her annoying little brother, one particularly big stomp sends Odessa flying through the floorboards and mysteriously twenty-four hours back in time.

Polly's visit to her grandparents in Connecticut becomes an extraordinary experience as she encounters old friends and mysterious strangers and finds herself traveling back in time to play a crucial role in a prehistoric confrontation.

"The magic treehouse has taken Jack and Annie back in time to England in 1944. England is fighting for its life in World War II. Before long, Jack and Annie find themselves parachuting into Normandy, France, behind enemy lines. The date is June 5. Will the brave brother and sister team be able to make a difference during one of the darkest times in history?"--

A scroll Great-Uncle Solomon, an archaeologist, found near the Dead Sea send Peter, nine, and Mary, ten, to the first moment of Creation and to the Garden of Eden.