My MIL is a vulnerable little old lady. Very frail, very little confidence. So today some people turn up and tell her they are students and would she like them to do some jobs in the garden? Poor old MIL falls for it. And of course they 'just' go into the house to fetch a glass of water.
When they leave, MIL discovers her handbag is missing. With all the money SIL took out so MIL could go shopping tomorrow thanks to a lift from the nice ladies at Church who see she's OK round the supermarket. And all her cards. And her house keys.
Bastards. They clearly have conversational skills and the ability to win trust, why can't they earn an honest living?
(Dh has cancelled cards, MIL reported to the police SIL and BIL have gone round and will stay the night, locksmith has been called out. All just very sad.)