When Bo sneaks into Callie's bag on her school trip to the Tower of London, she and Grace make plans to keep him secret. But when some gold coins and jewels are stolen from the site, having a spy in the sky comes in useful!
When Bo sneaks into Callie's bag on her school trip to the Tower of London, she and Grace make plans to keep him secret. But when some gold coins and jewels are stolen from the site, having a spy in the sky comes in useful!