Maisie Hitchins longs to be a world-famous detective, so it's no surprise when she's entangled in a highly intriguing plot involving stolen sausages, a rescued puppy and a fast-paced bicycle chase on the streets of Victorian London.
Famed star of the stage, Sarah Massey, is distraught - her priceless emerald necklace has been stolen! Maisie Hitchins is instantly intrigued, and decides to investigate the theatre. But nothing is what it seems in this world of make-believe...
When Tia hears that someone is stealing pedigree cats in the neighbourhood she decides to keep her beautiful Bengal kitten indoors. But the kitten manages to escape and Tia can't find her anywhere. What if she's been stolen by the cat thieves?
A new lodger, Mr Grange, has come to stay in 31 Albion Street, and Maisie is sure he's not what he seems. Why is Mr Grange lurking around on the streets of London, and what is that mysterious object hidden in his room?
Emi looks forward to her weekend visits to her dad's, but she's sad that her Shiba Inu puppy, Rina, can't come too. During the school holidays, Emi visits her dad for four whole days, and Rina is restless - what if Emi doesn't come back? Determined to find her owner, Rina escapes and heads to the last place she saw Emi - the railway station...
Alice's father is having a run of bad fortune - two of his ships have disappeared and he has lost a lot of money. Maisie is sure she can solve the mystery herself, so she heads down to London's sprawling docks to investigate. Can she discover what is happening at sea and save Alice's fortune?
Laura's mum works as a caretaker for some holiday apartments. One family are always leaving their puppy behind when they go to the beach and Laura offers to take it for walks. But how will she say goodbye when its time for the puppy to go home?