AT packed bars and clubs, unsuspecting tourists down cocktails and pints as gangs of glamorous women lurk in the shadows waiting for right moment to target their prey.

Plying holidaymakers with drinks laced with powerful sedatives, the ruthless women strip them of cash, phones and passports once they pass out.

Known as "Goodnight Cinderella" scams, Brit holidaymakers are being warned to watch out or face falling victim to the potentially lethal scams.

Infamous in Brazil , the scheme typically involves gangs of glamorous women approaching tourists in bars or clubs in famous hotspots like Rio de Janeiro .

Victims have been drugged, robbed and in some cases left for dead.

One young Brit engineering student recalled the moment his trip to Rio turned into a nightmare after meeting

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