MIND-boggling. That was the verdict on Derren Brown’s new show Enigma during its 41-date national tour.

Now the controversial, Olivier Award-winning master of mind magic is bringing it to the Adelphi, where it opens on Wednesday to July 18 (0844 579 0090).

He says: “Like previous shows, I will push myself to the limit. The challenge is to create new material that shocks, delights and defies explanation.”

So expect an edgy evening of showmanship and sometimes shocking, sometimes hilarious, but always baffling psychological illusions, perceptual manipulation and persuasive technique.

It’s important to note: Enigma is not suitable for children under 12.

Meanwhile, a new £3million fully staged, in-the-round production of Rodgers’ and Hammerstein’s classic musical The King And I opens at the Royal Albert Hall tonight to June 28 (020 7589 8212).

It’s costing more than any other musical production in the 15-year collaboration between the Albert Hall and impresario Raymond Gubbay.

In addition to a 75-strong acting company, including three sets of 12 children, and a 60-strong orchestra, it will feature a set with standing pools of water, a life-size ship and other boats and fireworks displays.

The story of the testy King Of Siam who warms to the prim English tutor Anna Leonowens is told through one of the most glorious and memorable scores ever written.

Its much-loved songs and sweeping melodies, including Shall We Dance, I Whistle A Happy Tune, Hello Young Lovers, Getting To Know You and the March of the Siamese Children, are played by the Royal Philharmonic Concert Orchestra.

Triple Olivier Award winner Maria Friedman stars as Anna, while the king is played by South Korean-born Daniel Dae Kim, who has starred in hit TV series Angel, ER and 24, but who’s best known as the enigmatic Jin in Lost.

It’s directed by Jeremy Sams, whose last West End work was The Sound Of Music.