Police diving teams have spent the day in a lake on a private estate in Lincolnshire in the search for a woman who hasn't been seen since Monday.
Denise Gray told a friend she's staying with in the village of Revesby near Horncastle she was going out for a walk, but didn't return.
Matt Price has been in Revesby:
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The pair were found guilty of running a number of brothels and trafficking vulnerable Chinese and Malaysian women around the country.
Barbara, from Sheffield, and her husband, Ray, gave much of their great fortune away to worthy causes.
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