The Secret Seven Books in Order

Jack witnesses suspicious activity at an old house on a snowy night. The Secret Seven set out to investigate, convinced that someone may be held prisoner in the building guarded by a deaf caretaker.

A stolen pearl necklace and a stranger spotted in the woods give the Secret Seven a new mystery. Their search leads to a circus field, where lions and an unusual local character complicate the investigation.

The Secret Seven build a treehouse as their new summer headquarters. A frightened boy and his kitten turn up there, bringing clues that draw the children into a mystery about a planned robbery.

Strange talk about Tigger's Barn catches the Secret Seven's attention. Peter dismisses it as gossip, but Jack hears a conversation that suggests real trouble, drawing the club into another investigation despite their leader's doubts.

Practising detective skills gets George into trouble and threatens his place in the Secret Seven. Meanwhile, Colin follows a man whose dog mysteriously disappears, giving the club a real case that demands more than practice.

Peter and Janet are sitting in their father's car when two strangers steal it, unaware of the children inside. Clues from the encounter pull the Secret Seven into an investigation involving a gang and stolen property.

While their shed is being painted, the Secret Seven choose a hidden cave as their new meeting place. Signs of an intruder draw them into a mystery involving Albert Tanner and unexpected excitement surrounding a scarecrow.

Susie's model aeroplane leads the Secret Seven to an apparently empty house. Discovering signs that someone is using an upstairs room, the children set out to learn who is there and why the occupant is hiding.

The Secret Seven investigate the disappearance of schoolgirl Elizabeth Sonning and a theft of money from her school. As they follow clues and search for answers, Susie's interference makes their efforts to untangle the mystery more difficult.

After witnessing a house fire, the Secret Seven try to help the affected family rebuild their lives. The theft of a valuable violin raises new questions, and the young detectives investigate whether the incidents are connected.

The Secret Seven's preparations for Bonfire Night are disrupted when their guy's clothes and firework money disappear. Susie's rival club draws suspicion, while strange men near a hut on Peter's farm suggest a more troubling mystery.

Jack’s new telescope turns an ordinary pastime into a mystery when Janet spots a face at the window of ruined Torling Castle. The Secret Seven investigate who might be hiding inside the supposedly deserted building.

A quarrel leaves the Secret Seven down to six members just as dogs begin disappearing around town. When Scamper also vanishes, the children must overcome their disagreements and investigate a mystery that has become painfully personal.

Colin promises to recover a kindly general’s missing medals, but clues are scarce. A nighttime investigation in Bramley Woods brings further danger, and the Secret Seven depend on Scamper as they try to catch a thief.

The Secret Seven want to help Tolly and his sick horse, Brownie, but dangerous horse thieves threaten their plans. The children must find a hiding place where their friends can stay safely out of reach.