T

he women report Jasper's murder but next day Ben, Lucy's colleague at the police station, informs them that the body has disappeared. Realising that there is police corruption at work the women decide they must stop the gang themselves. Jean poses as a potential client and visits Marta at the restaurant she runs, accompanied by Lucy, who uses her photographic memory to memorise the contents of Marta's ledger. It is in code but with Lizzie now at teacher training college next to the old Bletchley site the friends return there and find an old enigma machine. With Alice's expert knowledge they get it working and crack the code, which informs them of the times and locations of Marta's incoming shipments. They tip off customs to intercept the next consignment of sex slaves but realise that Marta is on to them and must act quickly to thwart her.

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