History
The theatre that stands today is the most recent in a line of four theatres at the same location dating back to 1663. For its first two centuries, Drury Lane was one of the most important theatres in the English-speaking world. Through most of that time, it was one of a small handful of theatres that were granted rights to produce drama in London.

The first theatre on the location was built on behest of Thomas Killigrew in the early years of the English Restoration. Actors appearing at this 'Theatre Royal in Bridges Street' included Nell Gwyn and Charles Hart. It was destroyed by fire in 1672. Killigrew built a larger theatre in the same spot, designed by Christopher Wren; now called the "Theatre Royal in Drury Lane", it opened in 1674. This building would last nearly 120 years, under leadership including Colley Cibber, David Garrick, and Richard Brinsley Sheridan. In 1791, under Sheridan's management, the building was demolished to make way for a larger theatre, which opened in 1794. This enormous new Drury Lane survived just 15 years, burning down in 1809. The building that stands today opened in 1812. It has been home to actors as diverse as Shakespearean Edmund Kean, comedian Dan Leno, and musical composer and performer Ivor Novello. Today, the theatre is owned by composer Andrew Lloyd Weber and generally stages popular musical theatre.

Phenomena
Drury Lane has been called one of the world's most haunted theatres. The most famous ghost is the 'Man in Grey', who appears dressed as a nobleman of the late 18th century with powdered hair beneath a tricorne hat, a dress jacket and cloak or cape, riding boots and a sword. Legend says that the Man in Grey is the ghost of a man whose skeletal remains were found within a walled-up side passage in 1848. The ghosts of actor Charles Macklin and comedian Joe Grimaldi are supposed to haunt the theatre. Macklin appears backstage, wandering the corridor which now stands in the spot where, in 1735, he killed his fellow actor Thomas Hallam in an argument over a wig. Joe Grimaldi is a helpful apparition, purportedly guiding nervous actors skilfully about the stage on more than one occasion.

Investigation
Initially, Derek senses little paranormal activity during his initial walk around the theatre, but he is soon possessed by the spirit of one Derek Hallam, who killed another man, Charles Macklin, after a struggle. He also claims another entity, Arthur, is watching the team from the theatre seats. The vigils result in sightings of two apparitions, namely a pair of legs spotted in a doorway and then a man walking up the stairs carrying chains. In the seating area of the theatre, a team member sits in the chair belonging to Drury Lane's 'Man in Grey'. Though the seat is left in the upward position when the experiment is over, a return to the area finds the seat has been lowered with no explanation.