In awe of Malory Towers, Darrell keeps her past at her old school a close secret. Always in the thick of it, Darrell has a hairy start at the train station and when odd sounds are heard in the dorm, learns about the ghost of Lady Jane Malory.

When Gwen leaves the school to learn about Darrell’s past, Darrell must try to stop her before it's too late. Meanwhile, not knowing where their dormmates are, the North Tower girls do all they can to cover when the Matron comes for lights out.

In an attempt to impress Alicia, Darrell unleashes a prank in Mam'zelle's class. Trick sweets sent by Alicia's brothers cause havoc in the school, and strange happenings continue when a mysterious red handprint appears in the dorm.

On a scorching hot day at Malory Towers, Miss Potts lets the first-form girls go down to the pool. Jealous of Darrell and Alicia's new friendship, Gwen takes the fun and games too far.

Darrell is up to play in the lacrosse game, but her excitement is short lived when she finds out they'll be playing against her old school. Darrell must face her past and overcome her temper if she wants to win the match.

Alicia's family sends a bounty of food, and the girls are all set to have their first North Tower midnight feast. But when Matron wakes during the feast, all Darrell’s worst fears are realized. Will the girls escape?

On open day, Malory Towers bursts with energy and visiting families. But Darrell's joy is short-lived when she finds out her half-term results. She is determined to keep them a secret from her parents.

After a confrontation with Darrell about her family, Sally is found hiding in pain. However, her injuries are far more serious than first thought. Fearing she is at fault, Darrell leaves the school to find a doctor.

Darrell is itching to get to the bottom of Sally's relationship with her family, but when Sally goes missing, the first form rallies together to comb the grounds. Darrell and Sally finally discover the real reason Sally was sent to Malory Towers.

A beautiful dress arrives at Malory Towers: one of the girls is a debutante, destined to marry into aristocracy. When Darrell finds out who the mystery girl is, she's determined to prove the girl is a poor choice.

Feeling guilty for lashing out at Mary-Lou, Darrell and Sally hatch a plan to give Mary-Lou the confidence she needs. But will the plan backfire and make Mary-Lou less courageous?

In the dead of night Mary-Lou faints when she sees a hooded figure in the dorm bathroom. Not wanting Mary-Lou's courage to be crushed, Darrell and Sally are determined to get to the bottom of the mystery.

May-Lou is devastated to find her courage pen smashed on the floor. When Darrell's shoes are found with ink on them, Darrell is the prime suspect, and the North Tower holds a class court.

Darrell and her class return to Malory Towers. The first order of business: elect a new class leader. Gwen decides to take the new girl under her wing and become her best friend.

Alicia convinces Darrell to help her play a prank on their teachers with invisible chalk. Meanwhile, Mr. Parker becomes stricter with his teaching. Mary-Lou finds her voice and stands up for herself.

The girls attempt to make Ellen feel more included but their efforts backfire. Miss Grayling has a secret that might put Malory Towers in danger.

In an attempt to impress her parents, Gwen auditions for the lead role in the upcoming school play. Darrell and Sally devise a plan to save the school.

When Alicia’s birthday gift from her parents doesn’t arrive, she takes it out on her teachers. Gwen becomes more tangled in her lies.

Ellen is stressed that she’ll lose her scholarship and stays up all night studying for an exam. Gwen gets her hands on Darrell’s diary and discovers Darrell's secret.

Darrell shows a potential investor around Malory Towers. Gwen is confronted with her lies when her mother visits.

A teacher and Gwen are quarantined after finding out they have the measles. Darrell finds out disturbing news about the future of Malory Towers. Sally takes on extra responsibilities.

Alicia and Darrell pull a sneezing prank on their French teacher, which disappoints Sally. Someone has stolen important possessions from the girls.

Gwen resorts to drastic measures to hide what she’s stolen. Darrell and Sally find a clue that could finally lead them to Lady Jane Malory’s treasure.

Malory Towers competes with the local boys' school in a competition. Ellen suffers a panic attack when she is accused of Gwen's misdeeds.

The girls doubt Ellen’s innocence. Gwen attempts to get rid of the items she stole, endangering Mary-Lou in the process.

Miss Grayling reveals disheartening news. In one last attempt to save the school, Darrell and Sally try to find Lady Jane’s lost treasure. Gwen’s secrets come to light.

The girls welcome Bill and her horse, Thunder, to Malory Towers, but Bill’s place in the third form is under threat when she is accused of spending too much time in the stables. Gwen’s father is offered the position of head of board at the school.

Darrell scouts out players for the lacrosse team, and discovers that Gwen has some hidden talents. Mary-Lou discovers a skin condition that worries her. Matron must fill in for the biology teacher.

Darrell suggests a midnight feast in the stables, but they’re afraid of horse poachers. Mavis, a sixth former, is on the hunt for someone to accompany her on the piano for an important audition, and Irene might fit the bill.

Bill struggles to balance her schoolwork with time spent at the stables with her horse, Thunder. Bill and Darrell need Thunder's help when someone at the school has a serious accident.

Miss Johnson enforces a list of tough new rules which get the better Darrell’s temper. An important lacrosse match is at stake when Darrell is given a particularly difficult punishment.

Sally returns to a very different Malory Towers after her case of the mumps. The strict new rules keep Mavis and Irene from their audition, but the girls have a plan to cover for them and keep Miss Johnson at bay.

Gwen goes a little overboard when she organizes a dance lesson with the Thackerton boys. Mary-Lou discovers a mysterious statue in the woods when Gwen asks her to break the rules to gather ivy.

Darrell’s sister Felicity visits to take an exam that will determine her acceptance at Malory Towers. Darrell wants to enjoy time with her sister but Miss Johnson's strict rules stand in the way.

Alicia sends a package for the girls filled with goodies and prank materials, plus a secret message. Darrell prepares for the lacrosse trial and sneaks in practice time.

With the third form on a trip to the circus, Darrell and Sally attempt to recover the confiscated peaches from Miss Johnson’s office, but they find more than they expected...

Bill will stop at nothing when she discovers that her horse Thunder is sick with colic. Gwen is charged with keeping Bill away from the stables or else they will both be punished.

Ron shows Darrell and Sally a stash of art found in the stables, but where did it come from? Miss Johnson is caught off-guard when Miss Grayling arrives back at Malory Towers.

With Darrell focused on clearing Ron’s name, Mary-Lou and Ellen uncover new information that changes everything they thought about the art thefts.

When Darrell finds herself stranded at an empty Malory Towers for Christmas, she has to hold her nerve when strange things start happening around the school.

With the strange goings-on still happening, the girls are determined to find help. However, when Gwen disappears on Christmas morning, their efforts turn to finding their friend.

After being selected as head of lower school, Darrell soon feels the demands of leadership when Felicity, her younger sister just starting at Malory Towers, gets into trouble.

Darrell enlists the help of the first-year students when facing her first challenge to her authority as head of lower school.

Preparing for the inter-tower lacrosse match leads to disappointment for Darrell and Felicity. The rest of the team speculates why breakout star Clarissa is hesitant to play.

Ruth lets her sister Connie take credit for her essay. The first forms try to evade Darrell while searching for treasure.

The first formers try to prank their teachers with Irene's help. Mademoiselle's reaction to the prank raises suspicions for Irene.

Alicia plans an outdoor midnight feast for her and Darrell. Felicity and June sneak out to search for a hidden room within Malory Towers.

Darrell struggles to prepare a speech she is to give in front of the whole school. Sally and Bill organize a lacrosse match. Irene’s father delivers news Irene has not been looking forward to.

June makes some itching powder for a prank that gets out of hand. Connie blames June for the unfortunate things that keep happening to her, even though June insists she had nothing to do with them.

When Clarissa receives troubling news that her pony has been sold, she breaks the rules to rescue him. Irene and Mademoiselle Rougier make efforts to strengthen their relationship.

Felicity and June prove to be a handful when Darrell supervises the class field trip. Meanwhile, Gwen gets more than she bargained for when left with Mr Parker's pregnant wife.

Darrell and her classmates await their exams while Felicity and June continue to explore the secret room. Gwen pretends to have heart issues to get out of the exam but then finds herself in a dangerous situation.

Ruth’s bullying of Connie reaches a new low when June is wrongly accused of playing pranks. Darrell encourages the lower form to find who is responsible and the whole class gets a lesson on accountability.

June and Darrell find themselves in danger when they leave the school to continue the search for the treasure in a cave during high tide. The rest of the school prepares for the wedding. Irene is given an important task by her father.

Felicity struggles to get out of Darrell's shadow in her second year at Malory Towers. Newcomer Jo struggles to follow the rules, getting Felicity caught in the crosshairs. Mary Lou debates how strict to be after becoming head of lower school.

June leads the second form girls in a strike to protect Clarissa from Gwen's constant demands, resulting in a big change. When a pipe bursts, old memories resurface and a new friend is made. Archaeological research begins at Malory Towers.

Felicity and Jo meet a young acrobat girl and Jo promises to take Felicity to the circus. When Jo breaks the rules to fulfill her promise, Miss Grayling teaches her a lesson about friendship. Twins Ruth and Connie start to notice their differences.

Clarissa goes undercover to prove that girls can play soccer just as good as boys. Darrell and Susan help Mr. Murray look for ancient symbols in the garden as they continue their archaeology research.

Jo and Connie trick Felicity into helping them retrieve Jo's confiscated pocket money from Matron's safe. The Second Form girls protest Jo's rule-breaking.

Afraid of being accused of stealing, Jo and Connie run away to the village. Darrell helps a worried Ruth search for her sister. When the girls return to Malory Towers, Jo's father learns about her misdeeds.

Gwen has plans with Ron, but gets stuck watching Mr. Parker's baby. Alicia recruits Felicity to the cross-country team, much to Darrell's dismay. When baby Kathleen goes missing, Gwen attempts to pass off the blame.

June pulls a daring stunt to save the beloved Malory Oak from being chopped down by Mr. Murray. The Second Form girls learn about chores and hard work. Jo trusts Felicity and Connie with a secret about her mother.

Mrs. Heather appears suddenly to take Susan home. The Second Form girls start a prank war with Mam'zelle. Ruth and Clarissa find a way for Susan to stay at Malory Towers.

On the day of the big race, Felicity cracks under the pressure of Alicia's tough coaching. Matron goes on vacation to see her family. The new nurse, Nurse Jane, has her hands full right away when Darrell gets injured looking for Felicity.