When Bo sneaks into Callie's bag on her school trip to the Tower of London, she and Grace struggle to keep him a secret. But when precious treasure is stolen from the Jewel House, having a Spy in the Sky comes in handy.
When Bo sneaks into Callie's bag on her school trip to the Tower of London, she and Grace struggle to keep him a secret. But when precious treasure is stolen from the Jewel House, having a Spy in the Sky comes in handy. The second hilarious instalment in the Major and Mynah series.
