When a father and his daughter find an abandoned infant in the snow, the event forever alters the 11-year-old's understanding of the world.

Washed ashore as a baby in tiny Tupelo Landing, North Carolina, Mo LoBeau, now eleven, and her best friend Dale turn detective when the amnesiac Colonel, owner of a café and co-parent of Mo with his cook, Miss Lana, seems implicated in a murder.

"Clayton Stumper might be in his twenties, but he dresses like your grandpa and fusses like your aunt. Abandoned at birth on the steps of the Fellowship of Puzzlemakers, he was raised by a group of eccentric enigmatologists and now finds himself among the last survivors of a fading institution. When the esteemed crossword compiler and main maternal presence in Clayton's life, Pippa Allsbrook, passes away, she bestows her final puzzle on him: a promise...

Heart, a foundling who was discovered five years earlier wrapped in a unicorn-embroidered blanket, finds a pregnant white mare in the woods and struggles to keep her and her colt safe and well.

When her beloved Moonsilver, the unicorn, is nearly killed by a hunter's arrow, Heart sneaks back into her village to get help from the healer, Ruth Oakes. Danger awaits and Heart must flee with Ruth's gift-a silver thread-to protect her and Moonsilver.

Twelve-year-old Lexington, a foundling raised in a zoo, spends a summer cementing friendships, growing closer to the elephant that saved her life, and learning about her family and herself.

Heart must hide her beloved unicorn, Moonsilver, from Lord Dunraven's hunters, so she and her animal friends join a troupe of traveling minstrels. Everyone thinks Moonsilver's horn is fake--just part of the act. Then Moonsilver heals a badly injured boy and the unicorn's secret is in danger. Can Heart's mysterious silver bracelet help her find the one place Moonsilver might be safe?

While duck hunting one morning, childless, middle-aged Nathan McCann finds a newborn abandoned in the woods. To his shock, the child--wrapped in a sweater and wearing a tiny knitted hat--is still alive. To his wife's shock, Nathan wants to adopt the boy...but the child's grandmother steps in. Nathan makes her promise, however, that one day she'll bring the boy to meet him so he can reveal that he was the one who rescued him.