New information links the unexplained death of a market trader to a series of drug rapes in east London - but with that case still ongoing, Ucos are unable to question the chief suspect, so they have to look into their victim's past in their search for clues. Gerry soon finds a likely culprit in the shape of the market inspector who clamped his car, while Sandra has problems of a more personal nature when her hated mother arrives for a visit.
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