Last week magician Dynamo left tourists in the Capital stunned as they watched him "float" beside a double decker bus. How did he do it? Well he wouldn't tell.
But now we at ITV London think we know how he pulled it off.
First of all here's the advert he was making as a reminder:
But photographs have emerged of artist Johan Lorbeer performing a similar act on walls - and one taken after he'd got down shows a metal pole with a false arm attached, which appears to have supported his weight.
Dynamo's representatives have so far declined to comment.