Horror fans locked in room with 'ghost' at exclusive book reading

To coincide with the launch of her new book Thin Air earlier this month, author Michelle Paver decided to prank an unsuspecting audience of horror fans at publisher Orion’s office.
At an exclusive reading, Michelle brought the mountaineering ghost in her book to life, causing something of a panic… especially when the guests realised the door was locked.
A leading theatrical director used special effects to film a ‘ghost’ actor in the adjacent room, projecting him into the audience in real-time.
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Via: PRexamples