Athelhampton Hall near Dorchester dates back to the Middle Ages and fell into disrepair as a tenant farm. It was then restored back to its original state by The Cooks who have lived there ever since. Once in the property, Derek connects with the spirit of a dead monkey, a pet of the previous inhabitants. Whilst walking around upstairs the crew all hear a cot rocking, but nobody is in the bedroom! The crew split into two groups and when the boys venture into the passageway where the monkey died, producer Karl feels something breathing on his ear... Meanwhile Yvette, director Bev and Jason keep a vigil next to the cot and catch orbs on camera.

In the 1100s, Chillingham Castle, was witness to many battles between England and Scotland. Since the 13th century, the same family have been living there in harmony with ghosts. Derek not only sees but feels The Blue Flash Boy whose bones were buried in the wall of a bedroom. A hissing noise in the corridor spooks the Crew... Derek contacts Lady Mary Berkley, a spirit of a lady who used to live there! Elsewhere, Karl sees a white box move by itself when filming in a storage room that used to be a torture chamber.

Dating back to the 1600s, Avebury Stones, along with the nearby Red Lion pub, is reputedly one of the most paranormal places in Great Britain, the latter of which is allegedly haunted by three ghosts... During a vigil, Derek sees one of the ghosts who was killed and thrown down a well. Further investigation leads Derek to draw Yvette and Jason outside to the stones for more exploration, but fearful Yvette stays in a haunted room by herself only to feel a tickling sensation on her head. Tension heightens when her husband Karl goes back to collect the camera from the room and is scratched twice on the back of his neck despite the room being empty...

Drury Lane Theatre in London is considered by some to be the most haunted theatre in the world. Using his paranormal skills Derek talks to the famous Man in Grey until the spirit of another ghost takes over his body and talks to the crew, helping uncover the murder mystery surrounding the theatre. Whilst Derek recovers, the crew split up and search the hotel in darkness where Yvette sees a man in chains. Meanwhile, three of the crew members bravely go in search of the Man in Grey...

Leap Castle in Ireland was built in 1604 and is currently home to a great deal of paranormal activity. While waiting for Derek to arrive, Rick experiences something whispering I his ear at the same time as Jason records high electromagnetic fields! Soon after, Derek senses the elemental ghost that is half-man-half-animal. Derek also manages to contact a monk who guards the castle from negative energies. The crew split in two for night vision vigils as Yvette and Stuart film orbs next to the gallery and Karl and Rick perform a séance in the bloody chapel...

The village of Colnbrook near Heathrow is home to the third oldest pub in Great Britain, The Ostrich Inn. Legend has it that in the 1400s over 60 people met their death there and Jarmin, an evil landlord, murdered visitors by throwing them in hot oil. When the Most Haunted team arrive, evidence is found in electromagnetic activity picked up by Jason's monitor. Several ghosts communicate through Derek to the crew about the way they were murdered by Jarmin. Meanwhile, Karl tries to find a book, which according to a spirit, has all the answers...

Built in 1871, the Souter Lighthouse in Tyne and Wear was once home to Grace Darling's niece Isabelle in 1881. As the investigation begins, Derek picks up on tobacco smells from a man from the Cantris shipwreck at the top of the lighthouse. Yvette and Jason detect paranormal activity on one of the monitors in the kitchen whilst on a tea break. The ghost of Isabelle reveals her presence to Derek in the kitchen and the living quarters, while equipment in the kitchen mysteriously turns itself on...

Once owned by the Royal Family, Charnock Hall in Preston was home to a catholic priest by the name of Robert Charnock. In the 17th century Catholicism was frowned upon in Britain and many masses were conducted here in secrecy. Current owners and past residents have witnessed priestly figures and nun-like transfigurations. Could the child-like feelings and giggling that the crew experience be the work of ghosts of small children that used to live here? The team bravely conduct a séance where Rick is overcome with physical pains and tingling.

Culzean Castle in Ayrshire is haunted by seven ghosts. Built in 1777 the original building dates back to 1165 and was a stronghold for the Clan Kennedy family. When Derek arrives he takes the crew straight to the most haunted room in the house, the Earl's bedroom, where he sees a ghost. Whilst walking around Derek hears bagpipes and tells the crew the name of the legendary piper! Later in the Earl's bedroom, flashes of light on a painting spook Marcel, and Yvette attempts to coax the lady spirit of Cassallis to be caught on camera.

The ghosts of smugglers terrify the crew when they spend 24 hours at The Mermaid Inn in East Sussex. A haunted chair reportedly moves on its own, the ghost of a man appears in old fashioned clothing, and there are reports of ghostly men fighting a duel in one of the bedrooms – the team just had to investigate! Derek is overwhelmed when he picks up on the ghost of a man who was killed by a group of smugglers. A firmly closed door opens on its own scaring Yvette and Jason. Karl catches noises and orbs on camera, and something hovers over Yvette while she sleeps in a haunted bedroom.

The Most Haunted team spend 24 hours at Blackpool's famous funfair, Pleasure Beach, to investigate stories of a haunted ghost train and frightening poltergeist activity. Derek is able to learn more about the infamous ghost Mr Glogs, who is said to haunt the ghost train. H also sees the spirits of some mischievous children in the gift shop. The team hear footsteps following them as they walk through the dark tunnel of the ghost train... are the girls' screams caused by ghostly hands touching their heads?

Witchcraft, murder, robbery and human sacrifice are all said to have happened at Treasure Holt. Based on the Essex coast, it is alleged to have been a house of ill repute and haven for smugglers years ago. Derek is guided round the house by the ghost of Simon The Monk. As he moves around, he sees The Crinoline Lady, while ghostly Uncle Percy communicates to the crew through Derek. The crew link hands and try to make contact with the ghosts. In spite of feeling cold, when they check the temperature gauge it has gone up...

Levens Hall is on the edge of the Lake District and dates back to 1350 when it was built by the De Redman family. When Karl and Rick walk around the house lots of strange noises are heard outside and Karl is mysteriously prodded. The mystery surrounding the cold blast on Yvette's hand supports the theory of paranormal existence, when a digital photograph shows an orb near her hand. Finally the team perform a séance where significant orb activity strongly suggests the presence of paranormal forces at work.

Yvette and the rest of the Most Haunted team are locked inside Derby Gaol where in the late eighteenth century scenes of total incarceration and brutal executions took place. Jason sets a trigger trap of a wooden cross on a piece of paper in a reputedly haunted cell, which gives incredible results. Huddled in a cell later during a vigil, the whole crew smell roses although nobody knows where it's coming from... Filming later reveals the presence of orbs in the very same cell...

Yvette and Jason don 1940s army uniforms to get into the feeling of Aldwych Station, which was built after the demolition of a theatre in 1907 and used as an air raid shelter in the Second World War. Derek speaks to a ghost called Margaret, who claims she was an actress and has been sighted many times before. As the crew walk through the tunnels in pitch black, Yvette thinks she sees a figure in the tunnel. Meanwhile, over another platform, a motion detector is set off yet nobody is near enough to trigger it...

Located in the centre of Ireland, this castle is built on the site of an ancient burial ground where plague victims were buried in the 1700s. With a labyrinth of dungeons and stories of ghostly apparitions, the Most Haunted team were keen to investigate Charleville. The team immediately experience poltergeist activity as Derek picks up on a strong negative force in the dungeons and the team get lucky with a Victorian séance.

Michelham Priory was originally a church built on a medieval island. In 1556 it was transformed into a house where many families have lived through tragedy. This location proves to be one of th most thrilling locations the team ever visited. Ghostly legs spook the team and Yvette is petrified as Jason's electromagnetic field meter picks up on a spiritual figure that Derek subsequently makes contact with.