Squishy and her twin "bonus" sisters Vee and Jessie are intrigued when a Ming vase disappears from the apartment above them, especially when they find out it is apparently one of a set stolen during the Opium Wars--and when they hack into the apartment building's security cameras and see what appears to be the ghost of a Chinese warrior they are determined to investigate the mystery.

Originally published: Richmond, Vic.: Hardie Grant Egmont, 2016.

Sita (A.K.A . Squishy) has moved in with her father and his new family, which includes a pair of twin girls (Jessie and Vee) while her mother is away on a security assignment in Geneva, and she is finding her "bonus sisters" difficult to get along with even though they are only five months older--but when Vee finds out that Squishy is feeding a runaway boy who is hiding in the apartment house garage the two girls discover that a shared secret can be the starting point of a firm friendship.

Meet Squishy Taylor: sneaky, cheeky ninja-detective! Squishy’s favorite movie star is filming on their street — right next door! But could Carmeline Clancy really be as naughty as the media says? Only Squishy, Vee, and Jessie can solve this mystery . . .

Squishy and her twin stepsisters, Vee and Jessie, are on the trail of a mystery; it starts with "Boring Lady" working in her office across the street at 2:57 in the morning, continues with the trashing of Mr. Hinkenbushel's apartment next door, and apparently involves illegal diamonds--and Squishy becomes convinced that Mr. Hinkenbushel is the diamond smuggler, only none of the grownups believe her.