The children row towards the island but thick, swirling fog hampers their progress. 

The children travel to Bath where Tilda discovers her old circus troupe.

At Sir Elphinstone's fete, Tilda and Arthur overhear an intriguing conversation. 

Tilda and Arthur help the Mortimers stage their version of Othello with hilarious consequences. Their happiness, however, is short-lived when Glasson tracks them down.

Tilda rescues Arthur from evil Reverend Glasson 's orphanage and they take refuge with kindly actors Mr and Mrs Mortimer.

1908: while in hospital after an accident, ten-year-old circus acrobat Tilda meets a dying woman who begs her to "find Arthur".