Sherlock Sam and Watson are visiting a Singapore international school when a student there begins receiving suspicious letters, and Sam must use

Sent to Camp Happy Harmony to learn how to get along with each other, pairs of brothers and sisters chronicle in letters home how they come to su

Lulu and Snow White find an old letter hidden in a jar.

Sent to Camp Happy Harmony to learn how to get along with each other, pairs of brothers and sisters chronicle in letters home how they come to su

Nancy and her friends find a hidden, perplexing message, in an old stagecoach as they search for a treasure hidden many years ago and it leads th

"When Colin finds a shoebox full of letters hidden in a stranger's attic, he knows he's supposed to throw them away. That's his summer job, getti

High school senior Thea Delacroix, aided by her friends, seeks to catch the Gemini Thief, who abducts and releases boys unharmed--including her c

Sixteen-year-old Dora travels to London to meet Sherlock Holmes, who might be her biological father, and ask his help for her cousin who is being

While trying to figure out who is responsible for stealing mail from nearby mailboxes, Nellie allows outward appearances to lead her to suspect a

Fourteen-year-old Sunny is stunned when a total stranger shows up at her house posing as her older sister Jazz, who supposedly died out of town i

Izzy and her family welcome foreign exchange student Alberto into their home, but after a series of mishaps and coincidences, and with a serial k

Jack Russell investigates when the new letter carrier lies about Doggeroo's dogs.