Johnny Rolle is a traveler from, who goes from beach to beach to fish and to be alone.
Secrets Can Kill: Remastered Edit
In the library database it says he wrote a book called Mystery at Palm Beech.
Ransom of the Seven Ships Edit
Johnny is the only person on Dread Isle when Nancy, Bess and George get there in 2009. Nancy finds Bess's shoe right outside his campsite, but he says he has not seen her.
Nancy eventually finds an ID that belongs to him, only it says he is from Australia. When confronted with this, Johnny confesses that his real name is John Poole and that he is an accountant that has to keep changing his identity in order to hide from bad clients.
However, after all of this, Nancy gets a note from Bess's kidnappers saying that they need her to deliver the treasure she found to the man staying at Sangre Beach. Nancy gives John the map and he tells her he wants her to "just watch". He takes off his bandanna and fake beard and reveals himself as Dwayne Powers, the agent who Nancy had sent to prison ten years ago for threatening Rick Arlen. Dwayne had set the whole "vacation" up, had created the license and used his acting skills to speak in Jamacian and Australian accents, just to play with Nancy's mind (he also tried to do this by having a map marked with all of the locations Nancy had solved a case at, and had newspapers in the lobby she had seen before). After Dread Isle's Primate Research Center shut down in 2004, one of the men who worked there did volunteer work at Dwayne's prison and got to know him. Dwayne learned about El Toro and his legendary treasure which would be hidden somewhere around the island and concocted his plan to get Nancy to find it for him while also getting his revenge on her. After Nancy delivers the treasure, a stone map which Dwayne hopes will lead to Cibola, one of the lost cities of gold, Dwayne captures Nancy and puts her in the hole where he has left Bess.
By the time Nancy and Bess escape, George gets the phone working and calls the authorities. Nancy helps look for Dwayne with a floatplane, but they find his boat empty. Nancy wonders if he got away on another boat or drowned somehow.