Staring into the depths of illusion at West India Quay
Actress Sophia Myles peers into the abyss created by pavement artist Joe Hill's ghoulish apparition on West India Quay.
But the 3D effect was not the only secret of the installation, created to promote the release of new British horror film Blackwood.
See below to find out what happened next...
As day turned to night on Wednesday, a world's first is revealed - the image changes in low illumination (and Sophia becomes director Adam Wimpenny but we suspect there's a simple explanation for that phenomenon).
Blackwood is being released in cinemas around the UK on Friday starring Sophia and Paul Kaye.
The film is a psychological thriller with a ghostly twist which Empire described as "a British Sixth Sense".