Highschool Musical star Zac Efron may have had an encounter with a ghostly apparition.  Zac was billed as the biggest teen star on the planet and has his own SAS guards to keep him safe from screaming girls, but what about wondering spirits? 

Zac has been shaken by the "supernatural" on the set of new movie Me And Orson Welles in Douglas on the Isle of Man.

Zac and his co-star CLAIRE DANES were convinced they saw a ghost while playing a scene in the Gaiety Theatre - which is supposedly one of the most haunted in the country.

They thought they saw a figure outside the window.  They were so shooken up, that the crew have making fun of the situation by playing tricks at every opportunity.

Source: http://www.thesun.co.uk/sol/homepage/showbiz/bizarre/909747/Zac-Efron-High-School-Musical-star-Says-he-saw-a-ghost.html#ixzz0UCE3nLCv