Time Tub Travellers, Circus Mystery, Claire Linney

When Zula’s aunt's antique bathtub turns out to be a Time Machine, she and her best friend Milo find themselves trapped 400 years in the past. Excited at the chance to show her history teacher, that there are Black people in Britain’s past, she pulls Milo deeper and deeper into the dangerous world of Tudor London. History is about to get real in ways Zula never imagined.
Will Zula prove her teacher wrong and get herself and Milo safely back to their own time?