While spending the summer in the Florida Keys with her grandfather, a retired marine biologist, ten-year-old Sarah has the opportunity to observe a variety of sharks and their behavior.

Doc Ford and friends go on a cave-diving expedition. But when the cave collapses, Doc must save his friends before time runs out.

While on a trip to the Florida Keys with his grandfather, Jim hopes to do some fishing but becomes involved in a mystery about an old crime linked to the owner of the resort where they are staying on vacation.

"Cam Derringer is Key West's wildest PI. While trying to find the men responsible for his wife's disappearance five years ago, he unexpectedly stumble across a much larger, and deadlier case. It appears his wife was caught in the middle of a drug ring used to fund international terrorism. Cam is soon pulled into a world of uncertainty and deceit as he digs deeper into the underworld. Giving a piece of his heart to a woman once more he soon realizes...

"Susan Clayton trabaja en la seccion de pasatiempos y enigmas de una revista. Un dia es sorprendida por una nota anonima que le espera en el buzon de su casa. Horrorizada, descifra el mensaje oculto: 'Te he encontrado'. El mensaje es realmente inquietante, mas aun en el mundo en que se ha convertido Estados Unidos: incapaz de frenar la escalada de la violencia, todo el mundo atesora armas para protegerse. Solo una comunidad ha logrado sobreponerse...

"Lily Barlow came back to her sleepy hometown of Marshall, Virginia, for one reason and one reason only--to rescue her family's bakery from financial ruin after her dad's heart attack. She successfully managed that without even donning an apron, but before heading back down to the University of Virginia, Lily unraveled a case of mistaken identity. She uncovered some evidence that her elderly landlady, Miss Delphine, is up to something, and got blindsided...