While vacationing at her uncle's sheep ranch, Trixie and the Bob-Whites track down the thieves who are behind the mysterious disappearance of several sheep.

The Bob-Whites are excited when Di wins the part of Juliet in the school play which is to be directed by their new drama teacher, Eileen Darcy. The cast are thrilled when she organises for some rare costumes to be loaned to them for the school play, but Trixie soon suspects that something is not quite right with the young drama teacher and her handsome fiancé. Trixie learns that Miss Darcy's father has been kidnapped and Honey has a feeling she's...

The Bob-Whites (minus Dan) head to Cobbett's Island with Miss Trask, where Mr Wheeler has rented a house, The Moorings, for the summer. The adventure begins as they finish their journey amidst a storm and they find the caretaker injured. Later that night, Trixie finds an old letter in a book and as they search for the author and recipient of the letter, they become good friends with their neighbour, Peter Kimball. Peter shares with them the joy...

A ride at the start of the summer holidays leads to mystery when the Bob-Whites see a man pouring gasoline on the shed of a kind neighbour. Trixie is determined to find the culprit who is trying to destroy the small business of Mrs Elliot and they stumble across a marijuana plantation and find themselves having to prove their own innocence. Trixie manages to uncover the truth with the help of a retired policemen and a good idea reveals a hidden...

The Bob-Whites plans to spend a few days at Finger Lakes with the Wheeler's are ruined when Mr Wheeler has to go away on business, so Miss Trask invites them to join her on a visit to her home in the Catskills. The Bob-Whites are tempted by the opportunity to solve the mystery of the disappearing Pirate captain, but Trixie finds other suspicious happenings occurring at the Inn. Ghostly Galleons, fires, mannequin wrestling and the disappearance of...

When a strange writer haunts the Hudson River area near Trixie's beloved Sleepyside and her brother begins to manifest some mysterious and frightening symptoms, Trixie decides to investigate.

With a headless, ghostly figure on horseback as her enemy, Trixie tries to determine whether the Lynches' missing butler is an innocent victim or the diabolically clever leader of a gang of art-trasure thieves.

The Bob-Whites attract attention when they are given a Model T Ford to auction for the Hospital rummage sale, and are helped by a stranger when the car breaks down. When the stranger is run down by a van before their eyes, Trixie becomes determined to find out who is responsible. But the victim can't even remember his own name, and when he disappears and the Model T is vandalised, Trixie is the only one who believes he is innocent and vows to solve...

Trixie suspects her friend's butler of being involved in the theft of a priceless Oriental vase.