When Lily loses her tie she is encouraged unwittingly to 'steal' a tie by an older pupil whom she helped out earlier.

She's mortified when she realises what she's done and she and the others concoct a plan to return the tie and right the wrong.

The plan gets complicated and involves trying to extract a thumb print from head teacher, Mrs Griggs!

The girls do manage to return the tie, but in the process Lily ends up inadvertently 'stealing' hundreds of pounds, when Matt and the football team hand over to her all their football trip money!

Meanwhile Jas is cutting it fine in terms of an art project deadline and winging it as usual. When she gets a 'skipping' detention from Mrs Griggs, she uses the opportunity to skip around the school acquiring other people's stuff for her art project, which she's calling 'A Pile of Old Clothes'.

When the finished art project is revealed at the end, the life-sized dummy is revealed to be wearing Lily's tie! So, Jas was in fact the real tie thief!