When the difficult star of the reality television show "Expedition Survival" disappears while filming an episode in the Florida Everglades using animals from the wildlife refuge run by Wahoo Crane's family, Wahoo and classmate Tuna Gordon set out to find him while avoiding Tuna's gun-happy father.

After a concussion that effects her balance, memory, and other abilities, twelve-year-old Kat goes to I-Can, the "Miracle Clinic in the Swamp, " where she joins forces with other patients to expose plot that endangers them all.

Time has passed since anyone's heard from Dr. Catalyst. Emmet and Calvin have even begun to think that the crazed scientist might be gone for good. But then, on a trip to snorkel off the Florida coast, one of their friends is nearly drowned by an underwater monster, with endless rows of razor-sharp teeth. No one is quite sure what they saw. Was it a moray eel? A giant barracuda? There's only one thing Emmet knows for certain. Dr. Catalyst is back....

Alec Ramsay's life is changed after he spends a terrifying night lost in the Florida Everglades with a deranged Frenchman who is helping him search for the runaway black stallion. While riding the Black in the Everglades one day, Alec meets a man astride a ghostly gray mare. Alec's fascination with the man turns to fear as he realizes the man is dangerously close to insanity. Soon Alec and the Black are caught up in a deadly chase through the depths...