When three leprechaun statues disappear just before St. Patrick's Day, Bradley, Brian, Nate, Lucy, and other friends follow clues in order to prove that Lucky O'Leary is innocent of the crime.
Seven-year-olds Bradley, Brian, Nate, and Lucy make observations and gather clues that convince them that their older siblings, cousin, and animals have been captured by hungry space aliens.
Bradley, Brian, Nate, and Lucy follow clues to find whoever left a rabbit in their first-grade classroom on Valentine's Day, because they are worried the rabbit will get sick and die of loneliness.
Eleven-year-old Miri Gill feels left out in her family, which has two sets of twins and her, until she travels back in time to 1935 and discovers Molly, her own lost twin, and brings her back to the present day.
Thirteen-year-old Sunny, accompanied by a stray dog, takes advantage of a monetary windfall to travel from her Nebraska foster home to Enumclaw, Washington in order to find the twin sister from whom she was separated at age three.
Weary of the war, a Union lieutenant recalls his life with his twin brother on their family's Virginia plantation and the events that led them to fight on different sides in the Civil War.
What starts out as a perfectly ordinary day in the Small house turns into Stitches Saturday when Cleo gets a cut on the head after her twin brother, Jack, accidentally pulls down their Toy House.
Connor's time aboard the pirate ship "Diablo" has him longing to be a part of the pirate life, while his twin sister Grace prefers he choose the less dangerous path of attending the distinguished Pirate Academy.
Connor, who was rescued by pirates after his ship was wrecked, believes his twin sister, Grace, was abducted by the Vampirates and is determined to find her.
